TY  - JOUR
AU  - Milić, Mirjana M.
AU  - Jović Orsini, Nataša
AU  - Požek, Miroslav
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13123
AB  - Ferrofluids based on magnetic iron oxide nanoparticles (IONPs) have been widely studied as multipurpose agents in various medical applications including magnetic hyperthermia, targeted drug delivery and magnetic resonance imaging (MRI). To increase their stability and compatibility with the living cells and thus improve their suitability for these purposes, the IONPs are often functionalized with different organic or inorganic molecules. In this work we report on the preparation of polyvinilpyrrolidone (PVP) functionalized IONPs through a simple co-precipitation method and investigated their suitability for magnetic hyperthermia and as a MRI contrast agent. Spherical PVP-coated IONPs, with an average particle size of ≈ 15 nm, showed superparamagnetic behavior and high saturation magnetization Ms = 80.7 emug−1, at room temperature. The specific absorption rate (SAR), a measure of the heating ability, ranged from 17 W/g to 721 W/g (evaluated for various combinations of AC magnetic field amplitudes and frequencies), while the intrinsic loss power (ILP) was in the range from 0.53 nHm2 kg−1 to 2.34 nHm2 kg−1. In addition to relatively good heating ability, high T2 relaxivity, r2 = 126 mM−1 s−1 and high r2/r1 ratio demonstrated that the preparation procedure used here can yield nanoparticles suitable for MRI guided localized magnetic hyperthermia.
T2  - Applied Physics A
T1  - Evaluating PVP coated iron oxide particles for localized magnetic hyperthermia and MRI imaging
VL  - 130
IS  - 5
SP  - 275
DO  - 10.1007/s00339-024-07452-4
ER  - 

@article{
author = "Milić, Mirjana M. and Jović Orsini, Nataša and Požek, Miroslav",
year = "2024",
abstract = "Ferrofluids based on magnetic iron oxide nanoparticles (IONPs) have been widely studied as multipurpose agents in various medical applications including magnetic hyperthermia, targeted drug delivery and magnetic resonance imaging (MRI). To increase their stability and compatibility with the living cells and thus improve their suitability for these purposes, the IONPs are often functionalized with different organic or inorganic molecules. In this work we report on the preparation of polyvinilpyrrolidone (PVP) functionalized IONPs through a simple co-precipitation method and investigated their suitability for magnetic hyperthermia and as a MRI contrast agent. Spherical PVP-coated IONPs, with an average particle size of ≈ 15 nm, showed superparamagnetic behavior and high saturation magnetization Ms = 80.7 emug−1, at room temperature. The specific absorption rate (SAR), a measure of the heating ability, ranged from 17 W/g to 721 W/g (evaluated for various combinations of AC magnetic field amplitudes and frequencies), while the intrinsic loss power (ILP) was in the range from 0.53 nHm2 kg−1 to 2.34 nHm2 kg−1. In addition to relatively good heating ability, high T2 relaxivity, r2 = 126 mM−1 s−1 and high r2/r1 ratio demonstrated that the preparation procedure used here can yield nanoparticles suitable for MRI guided localized magnetic hyperthermia.",
journal = "Applied Physics A",
title = "Evaluating PVP coated iron oxide particles for localized magnetic hyperthermia and MRI imaging",
volume = "130",
number = "5",
pages = "275",
doi = "10.1007/s00339-024-07452-4"
}

Milić, M. M., Jović Orsini, N.,& Požek, M.. (2024). Evaluating PVP coated iron oxide particles for localized magnetic hyperthermia and MRI imaging. in Applied Physics A, 130(5), 275.
https://doi.org/10.1007/s00339-024-07452-4

Milić MM, Jović Orsini N, Požek M. Evaluating PVP coated iron oxide particles for localized magnetic hyperthermia and MRI imaging. in Applied Physics A. 2024;130(5):275.
doi:10.1007/s00339-024-07452-4 .

Milić, Mirjana M., Jović Orsini, Nataša, Požek, Miroslav, "Evaluating PVP coated iron oxide particles for localized magnetic hyperthermia and MRI imaging" in Applied Physics A, 130, no. 5 (2024):275,
https://doi.org/10.1007/s00339-024-07452-4 . .

TY  - JOUR
AU  - Maletić, Slavica
AU  - Jović Orsini, Nataša
AU  - Milić, Mirjana
AU  - Dojčilović, Jablan
AU  - Montone, Amelia
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11994
AB  - Epoxy-rich carbon-based composites are well recognized materials in industries owing to their good mechanical properties and thermal stability. Here, dielectric properties of composites based on bisphenol-A-epoxy resin loaded with 5, 6, 10, and 15 wt% of graphite flakes (GF) have been studied. The frequency and temperature dependence of the dielectric permittivity, dielectric loss, and ac conductivity have been examined in temperature (−103 to 97°C) and frequency (20 Hz–200 kHz) range. Influence of the filler surface chemistry have been studied for composites loaded with 5 wt% GF obtained: (i) under wet milling, without or with adding Triton-100x as a surfactant, or (ii) under dry milling in the presence of KOH. The composite made of epoxy loaded with 5 wt% exfoliated expanded graphite flakes (EEG), was also prepared. The surface treatment with KOH notably increased dielectric constant of the composite, keeping low dielectric loss, while treatment with Triton-100x significantly increased tanδ. The composite loaded with exfoliated expanded graphite shows higher ac conductivity than those obtained with flaky graphite, GF. Possibility to change dielectric properties of the composites without changing the loading content can be used as an approach in tailoring one with desired dielectric properties.
T2  - Journal of Applied Polymer Science
T1  - Dielectric properties of epoxy/graphite flakes composites: Influence of loading and surface treatment
DO  - 10.1002/app.54881
ER  - 

@article{
author = "Maletić, Slavica and Jović Orsini, Nataša and Milić, Mirjana and Dojčilović, Jablan and Montone, Amelia",
year = "2023",
abstract = "Epoxy-rich carbon-based composites are well recognized materials in industries owing to their good mechanical properties and thermal stability. Here, dielectric properties of composites based on bisphenol-A-epoxy resin loaded with 5, 6, 10, and 15 wt% of graphite flakes (GF) have been studied. The frequency and temperature dependence of the dielectric permittivity, dielectric loss, and ac conductivity have been examined in temperature (−103 to 97°C) and frequency (20 Hz–200 kHz) range. Influence of the filler surface chemistry have been studied for composites loaded with 5 wt% GF obtained: (i) under wet milling, without or with adding Triton-100x as a surfactant, or (ii) under dry milling in the presence of KOH. The composite made of epoxy loaded with 5 wt% exfoliated expanded graphite flakes (EEG), was also prepared. The surface treatment with KOH notably increased dielectric constant of the composite, keeping low dielectric loss, while treatment with Triton-100x significantly increased tanδ. The composite loaded with exfoliated expanded graphite shows higher ac conductivity than those obtained with flaky graphite, GF. Possibility to change dielectric properties of the composites without changing the loading content can be used as an approach in tailoring one with desired dielectric properties.",
journal = "Journal of Applied Polymer Science",
title = "Dielectric properties of epoxy/graphite flakes composites: Influence of loading and surface treatment",
doi = "10.1002/app.54881"
}

Maletić, S., Jović Orsini, N., Milić, M., Dojčilović, J.,& Montone, A.. (2023). Dielectric properties of epoxy/graphite flakes composites: Influence of loading and surface treatment. in Journal of Applied Polymer Science.
https://doi.org/10.1002/app.54881

Maletić S, Jović Orsini N, Milić M, Dojčilović J, Montone A. Dielectric properties of epoxy/graphite flakes composites: Influence of loading and surface treatment. in Journal of Applied Polymer Science. 2023;.
doi:10.1002/app.54881 .

Maletić, Slavica, Jović Orsini, Nataša, Milić, Mirjana, Dojčilović, Jablan, Montone, Amelia, "Dielectric properties of epoxy/graphite flakes composites: Influence of loading and surface treatment" in Journal of Applied Polymer Science (2023),
https://doi.org/10.1002/app.54881 . .

TY  - CONF
AU  - Maletić, S.
AU  - Cerović, D.
AU  - Petronijević, A.
AU  - Milić, Mirjana
AU  - Jović Orsini, Nataša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11761
AB  - Dielectric properties of composites based on bisphenol-A-epoxy resin loaded with various content of graphite flakes (GF) have been studied. The dielectric permeability, tangent loss and ac conductivity have been examined in wide temperature (170 – 370 K) and frequency (20 Hz – 200 kHz) range. In composites loaded with GF flakes up to 10 wt.%, the dominant conduction mechanism is tunneling of electrons, while loading of 15 wt.% gives rise to electron conduction through direct contacts between fillers. Dielectric properties of composites are largely determined by the nature of the filler/matrix interface, the filler surface area and the inherent conductivity of the fillers. At low electric field frequencies, dominates socalled interfacial (or space charge) polarization due to accumulation of free charges at the interfaces between two phases (filler and matrix), which differ in electrical conductivity.Influence of the filler surface chemistry have been studied for composites loaded with 5 wt.% graphite flakes obtained: (i) under wet milling, without (GF) or with (GF-Tr100x) adding Triton-100x as a surfactant, or (ii) under dry milling in the presence of KOH (GF-KOH). The surface treatment with KOH notable increased dielectric constant of the epoxy/GF-KOH5 composite, keeping low tangent loss, comparable to the counterpart, the epoxy/GF5 composite.
PB  - Society of Chemists and Technologists of Macedonia
C3  - 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia
T1  - Interfacial Polarization and Dielectric Properties of Epoxy/Graphite Flakes Composites
SP  - 169
EP  - 169
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11761
ER  - 

@conference{
author = "Maletić, S. and Cerović, D. and Petronijević, A. and Milić, Mirjana and Jović Orsini, Nataša",
year = "2023",
abstract = "Dielectric properties of composites based on bisphenol-A-epoxy resin loaded with various content of graphite flakes (GF) have been studied. The dielectric permeability, tangent loss and ac conductivity have been examined in wide temperature (170 – 370 K) and frequency (20 Hz – 200 kHz) range. In composites loaded with GF flakes up to 10 wt.%, the dominant conduction mechanism is tunneling of electrons, while loading of 15 wt.% gives rise to electron conduction through direct contacts between fillers. Dielectric properties of composites are largely determined by the nature of the filler/matrix interface, the filler surface area and the inherent conductivity of the fillers. At low electric field frequencies, dominates socalled interfacial (or space charge) polarization due to accumulation of free charges at the interfaces between two phases (filler and matrix), which differ in electrical conductivity.Influence of the filler surface chemistry have been studied for composites loaded with 5 wt.% graphite flakes obtained: (i) under wet milling, without (GF) or with (GF-Tr100x) adding Triton-100x as a surfactant, or (ii) under dry milling in the presence of KOH (GF-KOH). The surface treatment with KOH notable increased dielectric constant of the epoxy/GF-KOH5 composite, keeping low tangent loss, comparable to the counterpart, the epoxy/GF5 composite.",
publisher = "Society of Chemists and Technologists of Macedonia",
journal = "26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia",
title = "Interfacial Polarization and Dielectric Properties of Epoxy/Graphite Flakes Composites",
pages = "169-169",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11761"
}

Maletić, S., Cerović, D., Petronijević, A., Milić, M.,& Jović Orsini, N.. (2023). Interfacial Polarization and Dielectric Properties of Epoxy/Graphite Flakes Composites. in 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia
Society of Chemists and Technologists of Macedonia., 169-169.
https://hdl.handle.net/21.15107/rcub_vinar_11761

Maletić S, Cerović D, Petronijević A, Milić M, Jović Orsini N. Interfacial Polarization and Dielectric Properties of Epoxy/Graphite Flakes Composites. in 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia. 2023;:169-169.
https://hdl.handle.net/21.15107/rcub_vinar_11761 .

Maletić, S., Cerović, D., Petronijević, A., Milić, Mirjana, Jović Orsini, Nataša, "Interfacial Polarization and Dielectric Properties of Epoxy/Graphite Flakes Composites" in 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia (2023):169-169,
https://hdl.handle.net/21.15107/rcub_vinar_11761 .

TY  - JOUR
AU  - Milić, Mirjana
AU  - Jović Orsini, Nataša
AU  - Markovic, Smilja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11930
AB  - Four samples containing magnetic iron oxide nanoparticles (MIONs) of various sizes are prepared employing a simple low-temperature method of oxidative precipitation from FeCl2∙4H2O-NaOH-NaNO3 aqueous solution. For the preparation of two samples, the usual oxidation-precipitation synthesis protocol is modified by using ethylenediaminetetraacetic acid (EDTA) chelating agent as a stabilizer of the Fe2+ ions in a solution, which results in the partial capping of the prepared MIONs with EDTA molecules. Three out of four samples are subjected to citric acid (CA) functionalization in the post synthesis protocol. Structural and magnetic properties of the synthesized MIONs are assessed using various experimental techniques (XRD, TEM, Fourier transform infrared, dynamic light scattering, Mössbauer, and SQUID). The average size of spherical-like MIONs is tuned from 7 nm to 38 nm by changing the synthesis protocol. Their room temperature saturation magnetization, M s, is in the range of 43 to 91 emu g−1. Magnetic heating ability, expressed via specific absorption rate value, which ranges from 139 to 390 W/gFe, is discussed in relation to their structural and magnetic properties and the possible energy dissipation mechanisms involved. The best heating performance is exhibited by the sample decorated with EDTA and with a bimodal size distribution with average particle sizes of 14 and 37 nm and M s = 87 emu g−1. Though this sample contains particles prone to form aggregates, capping with EDTA provides good colloidal stability of this sample, thus preserving the magnetic heating ability. It is demonstrated that two samples, consisting of 7 nm-sized CA- or 14 nm-sized EDTA/CA-functionalized superparamagnetic MIONs, with a similar hydrodynamic radius, heat in a very similar way in the relatively fast oscillating alternating current magnetic field, f = 577 kHz.
T2  - Journal of Physics D: Applied Physics
T1  - CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study
VL  - 57
IS  - 2
SP  - 025001
DO  - 10.1088/1361-6463/acff06
ER  - 

@article{
author = "Milić, Mirjana and Jović Orsini, Nataša and Markovic, Smilja",
year = "2023",
abstract = "Four samples containing magnetic iron oxide nanoparticles (MIONs) of various sizes are prepared employing a simple low-temperature method of oxidative precipitation from FeCl2∙4H2O-NaOH-NaNO3 aqueous solution. For the preparation of two samples, the usual oxidation-precipitation synthesis protocol is modified by using ethylenediaminetetraacetic acid (EDTA) chelating agent as a stabilizer of the Fe2+ ions in a solution, which results in the partial capping of the prepared MIONs with EDTA molecules. Three out of four samples are subjected to citric acid (CA) functionalization in the post synthesis protocol. Structural and magnetic properties of the synthesized MIONs are assessed using various experimental techniques (XRD, TEM, Fourier transform infrared, dynamic light scattering, Mössbauer, and SQUID). The average size of spherical-like MIONs is tuned from 7 nm to 38 nm by changing the synthesis protocol. Their room temperature saturation magnetization, M s, is in the range of 43 to 91 emu g−1. Magnetic heating ability, expressed via specific absorption rate value, which ranges from 139 to 390 W/gFe, is discussed in relation to their structural and magnetic properties and the possible energy dissipation mechanisms involved. The best heating performance is exhibited by the sample decorated with EDTA and with a bimodal size distribution with average particle sizes of 14 and 37 nm and M s = 87 emu g−1. Though this sample contains particles prone to form aggregates, capping with EDTA provides good colloidal stability of this sample, thus preserving the magnetic heating ability. It is demonstrated that two samples, consisting of 7 nm-sized CA- or 14 nm-sized EDTA/CA-functionalized superparamagnetic MIONs, with a similar hydrodynamic radius, heat in a very similar way in the relatively fast oscillating alternating current magnetic field, f = 577 kHz.",
journal = "Journal of Physics D: Applied Physics",
title = "CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study",
volume = "57",
number = "2",
pages = "025001",
doi = "10.1088/1361-6463/acff06"
}

Milić, M., Jović Orsini, N.,& Markovic, S.. (2023). CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study. in Journal of Physics D: Applied Physics, 57(2), 025001.
https://doi.org/10.1088/1361-6463/acff06

Milić M, Jović Orsini N, Markovic S. CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study. in Journal of Physics D: Applied Physics. 2023;57(2):025001.
doi:10.1088/1361-6463/acff06 .

Milić, Mirjana, Jović Orsini, Nataša, Markovic, Smilja, "CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study" in Journal of Physics D: Applied Physics, 57, no. 2 (2023):025001,
https://doi.org/10.1088/1361-6463/acff06 . .

TY  - JOUR
AU  - Jović Orsini, Nataša
AU  - Milić, Mirjana M.
AU  - Torres, Teobaldo E.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8890
AB  - In this work, we studied structural and magnetic properties of 18 nm sized Zn-substituted magnetite, 28 nm sized unsubstituted and 17 nm sized (Mn, Zn)-substituted iron oxide nanoparticles, synthesized by thermal decomposition method. Their features were examined by analyzing the x-ray diffraction data, Fe-57 Mossbauer spectra and magnetization measurements by SQUID interferometer. The microstructure was inspected comparing the different size and strain broadening models incorporated into Fullprof software. In terms of crystallinity and size dispersion, applied synthesis protocol shows superiority over decomposition of iron oleate and the co-precipitation synthesis route. The saturation magnetization at T = 5 K was found to be within the M-S = 91.2-98.6 A m(2 )kg(-1) range, while at 300 K M-S of pure and Zn-substituted Fe3O4 nanoparticles is 83.6 and 86.2 A m(2 )kg(-1), respectively. Effective magnetic anisotropy constant K-eff, estimated under slow measurements by SQUID, is below 20 kJ m(-3) in all three samples. Some preliminary measurements of the magnetic hyperthermia performance, expressed via specific absorption rate value showed that the best heating performances were displayed by 18 nm sized oleic acid-coated Zn0.13Fe2.87O4 cubo-octahedrons with SAR approximately equal to 425 W/g(Fe) at H-0 = 20 kA m(-1) and f = 228 kHz.
T2  - Nanotechnology
T1  - Zn- and (Mn, Zn)-substituted versus unsubstituted magnetite nanoparticles: structural, magnetic and hyperthermic properties
VL  - 31
IS  - 22
SP  - 225707
DO  - 10.1088/1361-6528/ab76e7
ER  - 

@article{
author = "Jović Orsini, Nataša and Milić, Mirjana M. and Torres, Teobaldo E.",
year = "2020",
abstract = "In this work, we studied structural and magnetic properties of 18 nm sized Zn-substituted magnetite, 28 nm sized unsubstituted and 17 nm sized (Mn, Zn)-substituted iron oxide nanoparticles, synthesized by thermal decomposition method. Their features were examined by analyzing the x-ray diffraction data, Fe-57 Mossbauer spectra and magnetization measurements by SQUID interferometer. The microstructure was inspected comparing the different size and strain broadening models incorporated into Fullprof software. In terms of crystallinity and size dispersion, applied synthesis protocol shows superiority over decomposition of iron oleate and the co-precipitation synthesis route. The saturation magnetization at T = 5 K was found to be within the M-S = 91.2-98.6 A m(2 )kg(-1) range, while at 300 K M-S of pure and Zn-substituted Fe3O4 nanoparticles is 83.6 and 86.2 A m(2 )kg(-1), respectively. Effective magnetic anisotropy constant K-eff, estimated under slow measurements by SQUID, is below 20 kJ m(-3) in all three samples. Some preliminary measurements of the magnetic hyperthermia performance, expressed via specific absorption rate value showed that the best heating performances were displayed by 18 nm sized oleic acid-coated Zn0.13Fe2.87O4 cubo-octahedrons with SAR approximately equal to 425 W/g(Fe) at H-0 = 20 kA m(-1) and f = 228 kHz.",
journal = "Nanotechnology",
title = "Zn- and (Mn, Zn)-substituted versus unsubstituted magnetite nanoparticles: structural, magnetic and hyperthermic properties",
volume = "31",
number = "22",
pages = "225707",
doi = "10.1088/1361-6528/ab76e7"
}

Jović Orsini, N., Milić, M. M.,& Torres, T. E.. (2020). Zn- and (Mn, Zn)-substituted versus unsubstituted magnetite nanoparticles: structural, magnetic and hyperthermic properties. in Nanotechnology, 31(22), 225707.
https://doi.org/10.1088/1361-6528/ab76e7

Jović Orsini N, Milić MM, Torres TE. Zn- and (Mn, Zn)-substituted versus unsubstituted magnetite nanoparticles: structural, magnetic and hyperthermic properties. in Nanotechnology. 2020;31(22):225707.
doi:10.1088/1361-6528/ab76e7 .

Jović Orsini, Nataša, Milić, Mirjana M., Torres, Teobaldo E., "Zn- and (Mn, Zn)-substituted versus unsubstituted magnetite nanoparticles: structural, magnetic and hyperthermic properties" in Nanotechnology, 31, no. 22 (2020):225707,
https://doi.org/10.1088/1361-6528/ab76e7 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Milić, Mirjana M.
AU  - Zdravković, Jelena D.
AU  - Spasojević, Vojislav
PY  - 2019
UR  - http://link.springer.com/10.1134/S0036024419030130
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8213
AB  - Abstract: Origin of the intrinsic coercivity field variations observed by hysteretic measurements established by Nikolic et al. was investigated in detail by ZFC/FC measurements. In this study, magnetic behavior of the samples is further examined by calculation of the ZFC Mn(T) and Mn(H) first derivatives. Performed study showed that the main contribution to the measured coercivity comes from the ε-Fe2O3 particles, characterized by Hci = 24 kOe, although both samples posses SPM ε-Fe2O3 fraction. As a result, Hci values of the samples are differed dependent on the quantity of the SPM ε-Fe2O3 particles in the sample. Mechanism of the intrisic coercivity field variations is discussed. © 2019, Pleiades Publishing, Ltd.
T2  - Russian Journal of Physical Chemistry A
T1  - Origin of the Intrinsic Coercivity Field Variations and Magnetic Study of ε-Fe2O3
VL  - 93
IS  - 3
SP  - 588
EP  - 593
DO  - 10.1134/S0036024419030130
ER  - 

@article{
author = "Nikolić, Violeta N. and Milić, Mirjana M. and Zdravković, Jelena D. and Spasojević, Vojislav",
year = "2019",
abstract = "Abstract: Origin of the intrinsic coercivity field variations observed by hysteretic measurements established by Nikolic et al. was investigated in detail by ZFC/FC measurements. In this study, magnetic behavior of the samples is further examined by calculation of the ZFC Mn(T) and Mn(H) first derivatives. Performed study showed that the main contribution to the measured coercivity comes from the ε-Fe2O3 particles, characterized by Hci = 24 kOe, although both samples posses SPM ε-Fe2O3 fraction. As a result, Hci values of the samples are differed dependent on the quantity of the SPM ε-Fe2O3 particles in the sample. Mechanism of the intrisic coercivity field variations is discussed. © 2019, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Physical Chemistry A",
title = "Origin of the Intrinsic Coercivity Field Variations and Magnetic Study of ε-Fe2O3",
volume = "93",
number = "3",
pages = "588-593",
doi = "10.1134/S0036024419030130"
}

Nikolić, V. N., Milić, M. M., Zdravković, J. D.,& Spasojević, V.. (2019). Origin of the Intrinsic Coercivity Field Variations and Magnetic Study of ε-Fe2O3. in Russian Journal of Physical Chemistry A, 93(3), 588-593.
https://doi.org/10.1134/S0036024419030130

Nikolić VN, Milić MM, Zdravković JD, Spasojević V. Origin of the Intrinsic Coercivity Field Variations and Magnetic Study of ε-Fe2O3. in Russian Journal of Physical Chemistry A. 2019;93(3):588-593.
doi:10.1134/S0036024419030130 .

Nikolić, Violeta N., Milić, Mirjana M., Zdravković, Jelena D., Spasojević, Vojislav, "Origin of the Intrinsic Coercivity Field Variations and Magnetic Study of ε-Fe2O3" in Russian Journal of Physical Chemistry A, 93, no. 3 (2019):588-593,
https://doi.org/10.1134/S0036024419030130 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Milić, Mirjana M.
AU  - Zdravković, Jelena D.
AU  - Spasojević, Vojislav
PY  - 2019
UR  - http://link.springer.com/10.1134/S0036024419020316
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8214
AB  - Abstract: ε-Fe2O3 phase is recognized as an attractive material, in both technological and scientific point of view, since it can achieve very high room-temperature coercivity (10–20 kOe). In this paper, multi-phase samples Fe2O3/SiO2 with slightly different Fe/Si molar ratio were produced by sol–gel synthesis route. The obtained samples were characterized by various experimental techniques including XRD, TA, FTIR, and SQUID (DC and AC magnetic measurements). It was found that both samples consisted of α-Fe2O3 and ε‑Fe2O3 phases embedded in the silica matrix, and showed very similar structural and magnetic properties, except that displayed significantly different room-temperature intrinsic coercivity field values: HciS1 = 14.3 kOe and HciS2 = 7.5 kOe. We have discussed possible origin of thus high intrinsic coercivity field variation. © 2019, Pleiades Publishing, Ltd.
T2  - Russian Journal of Physical Chemistry A
T1  - Origin of the Intrinsic Coercivity Field Variations of ε-Fe2O3
VL  - 93
IS  - 2
SP  - 377
EP  - 383
DO  - 10.1134/S0036024419020316
ER  - 

@article{
author = "Nikolić, Violeta N. and Milić, Mirjana M. and Zdravković, Jelena D. and Spasojević, Vojislav",
year = "2019",
abstract = "Abstract: ε-Fe2O3 phase is recognized as an attractive material, in both technological and scientific point of view, since it can achieve very high room-temperature coercivity (10–20 kOe). In this paper, multi-phase samples Fe2O3/SiO2 with slightly different Fe/Si molar ratio were produced by sol–gel synthesis route. The obtained samples were characterized by various experimental techniques including XRD, TA, FTIR, and SQUID (DC and AC magnetic measurements). It was found that both samples consisted of α-Fe2O3 and ε‑Fe2O3 phases embedded in the silica matrix, and showed very similar structural and magnetic properties, except that displayed significantly different room-temperature intrinsic coercivity field values: HciS1 = 14.3 kOe and HciS2 = 7.5 kOe. We have discussed possible origin of thus high intrinsic coercivity field variation. © 2019, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Physical Chemistry A",
title = "Origin of the Intrinsic Coercivity Field Variations of ε-Fe2O3",
volume = "93",
number = "2",
pages = "377-383",
doi = "10.1134/S0036024419020316"
}

Nikolić, V. N., Milić, M. M., Zdravković, J. D.,& Spasojević, V.. (2019). Origin of the Intrinsic Coercivity Field Variations of ε-Fe2O3. in Russian Journal of Physical Chemistry A, 93(2), 377-383.
https://doi.org/10.1134/S0036024419020316

Nikolić VN, Milić MM, Zdravković JD, Spasojević V. Origin of the Intrinsic Coercivity Field Variations of ε-Fe2O3. in Russian Journal of Physical Chemistry A. 2019;93(2):377-383.
doi:10.1134/S0036024419020316 .

Nikolić, Violeta N., Milić, Mirjana M., Zdravković, Jelena D., Spasojević, Vojislav, "Origin of the Intrinsic Coercivity Field Variations of ε-Fe2O3" in Russian Journal of Physical Chemistry A, 93, no. 2 (2019):377-383,
https://doi.org/10.1134/S0036024419020316 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Vasić, Milica M.
AU  - Milić, Mirjana M.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7876
AB  - Samples containing CuFe2O4 and CuO nanoparticles were synthesized by coprecipitation method and subjected to thermal treatment at 300 °C, 500 °C, 700 °C, 900 °C and 1100 °C. Depending on the synthesis conditions, high-temperature treatment of the prepared samples brought to the formation of CuFe2O4 with a tetragonal or cubic structure, which was confirmed by X-ray diffraction analysis. The influence of formation mechanism onto the crystallite sizes of nanoparticles and structural transformation of CuFe2O4 is discussed. For the first time it was shown that variations of the initial amount of Fe3+ and Cu2+ ions precursors resulted in the formation of low- and high-temperature CuFe2O4 phase at the same annealing temperature, 1100 °C. © 2018
T2  - Ceramics International
T1  - Observation of low- and high-temperature CuFe2O4 phase at 1100 °C: The influence of Fe3+ ions on CuFe2O4 structural transformation
VL  - 44
IS  - 17
SP  - 21145
EP  - 21152
DO  - 10.1016/j.ceramint.2018.08.157
ER  - 

@article{
author = "Nikolić, Violeta N. and Vasić, Milica M. and Milić, Mirjana M.",
year = "2018",
abstract = "Samples containing CuFe2O4 and CuO nanoparticles were synthesized by coprecipitation method and subjected to thermal treatment at 300 °C, 500 °C, 700 °C, 900 °C and 1100 °C. Depending on the synthesis conditions, high-temperature treatment of the prepared samples brought to the formation of CuFe2O4 with a tetragonal or cubic structure, which was confirmed by X-ray diffraction analysis. The influence of formation mechanism onto the crystallite sizes of nanoparticles and structural transformation of CuFe2O4 is discussed. For the first time it was shown that variations of the initial amount of Fe3+ and Cu2+ ions precursors resulted in the formation of low- and high-temperature CuFe2O4 phase at the same annealing temperature, 1100 °C. © 2018",
journal = "Ceramics International",
title = "Observation of low- and high-temperature CuFe2O4 phase at 1100 °C: The influence of Fe3+ ions on CuFe2O4 structural transformation",
volume = "44",
number = "17",
pages = "21145-21152",
doi = "10.1016/j.ceramint.2018.08.157"
}

Nikolić, V. N., Vasić, M. M.,& Milić, M. M.. (2018). Observation of low- and high-temperature CuFe2O4 phase at 1100 °C: The influence of Fe3+ ions on CuFe2O4 structural transformation. in Ceramics International, 44(17), 21145-21152.
https://doi.org/10.1016/j.ceramint.2018.08.157

Nikolić VN, Vasić MM, Milić MM. Observation of low- and high-temperature CuFe2O4 phase at 1100 °C: The influence of Fe3+ ions on CuFe2O4 structural transformation. in Ceramics International. 2018;44(17):21145-21152.
doi:10.1016/j.ceramint.2018.08.157 .

Nikolić, Violeta N., Vasić, Milica M., Milić, Mirjana M., "Observation of low- and high-temperature CuFe2O4 phase at 1100 °C: The influence of Fe3+ ions on CuFe2O4 structural transformation" in Ceramics International, 44, no. 17 (2018):21145-21152,
https://doi.org/10.1016/j.ceramint.2018.08.157 . .

TY  - JOUR
AU  - Milić, Mirjana M.
AU  - Nikolić, Violeta N.
AU  - Jovanović, Sonja
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1735
AB  - In this work, sol gel method was used to prepare FexOy/Gd2O3/SiO2 composite system starting from two different iron precursors: iron nitrate and iron oxide xerogel. The obtained samples were subjected to heat treatment at different temperatures under atmospheric conditions. Thermal evolution of the prepared samples has been systematically investigated by using X-ray diffraction (XRD) analysis and Fourier transform infrared spectroscopy (FTIR). Samples calcined at 1030 degrees C were also characterized by transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) experimental techniques. Effect of thermal treatment on phase formation in the prepared composite system has been discussed. It was found that iron nitrate based sample developed only alpha-Fe2O3 structural phase, while the sample based on the iron oxide xerogel developed alpha-Fe2O3 and gamma-Fe2O3 phases, with both of them remaining stable up to temperatures as high as 1030 degrees C. Gadolinium precursor crystallized directly in low-temperature triclinic B-type gadolinium disilicate Gd2Si2O7 (Gd2O3 center dot 2SiO(2)) phase at 900 degrees C, without formation of intermediate monosilicate phase. No other crystalline phases related to gadolinium were observed.
T2  - Ceramics International
T1  - Synthesis and characterization of nanocrystalline FexOy/Gd2O3/SiO2 composite powder
VL  - 43
IS  - 16
SP  - 14044
EP  - 14049
DO  - 10.1016/j.ceramint.2017.07.138
ER  - 

@article{
author = "Milić, Mirjana M. and Nikolić, Violeta N. and Jovanović, Sonja",
year = "2017",
abstract = "In this work, sol gel method was used to prepare FexOy/Gd2O3/SiO2 composite system starting from two different iron precursors: iron nitrate and iron oxide xerogel. The obtained samples were subjected to heat treatment at different temperatures under atmospheric conditions. Thermal evolution of the prepared samples has been systematically investigated by using X-ray diffraction (XRD) analysis and Fourier transform infrared spectroscopy (FTIR). Samples calcined at 1030 degrees C were also characterized by transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) experimental techniques. Effect of thermal treatment on phase formation in the prepared composite system has been discussed. It was found that iron nitrate based sample developed only alpha-Fe2O3 structural phase, while the sample based on the iron oxide xerogel developed alpha-Fe2O3 and gamma-Fe2O3 phases, with both of them remaining stable up to temperatures as high as 1030 degrees C. Gadolinium precursor crystallized directly in low-temperature triclinic B-type gadolinium disilicate Gd2Si2O7 (Gd2O3 center dot 2SiO(2)) phase at 900 degrees C, without formation of intermediate monosilicate phase. No other crystalline phases related to gadolinium were observed.",
journal = "Ceramics International",
title = "Synthesis and characterization of nanocrystalline FexOy/Gd2O3/SiO2 composite powder",
volume = "43",
number = "16",
pages = "14044-14049",
doi = "10.1016/j.ceramint.2017.07.138"
}

Milić, M. M., Nikolić, V. N.,& Jovanović, S.. (2017). Synthesis and characterization of nanocrystalline FexOy/Gd2O3/SiO2 composite powder. in Ceramics International, 43(16), 14044-14049.
https://doi.org/10.1016/j.ceramint.2017.07.138

Milić MM, Nikolić VN, Jovanović S. Synthesis and characterization of nanocrystalline FexOy/Gd2O3/SiO2 composite powder. in Ceramics International. 2017;43(16):14044-14049.
doi:10.1016/j.ceramint.2017.07.138 .

Milić, Mirjana M., Nikolić, Violeta N., Jovanović, Sonja, "Synthesis and characterization of nanocrystalline FexOy/Gd2O3/SiO2 composite powder" in Ceramics International, 43, no. 16 (2017):14044-14049,
https://doi.org/10.1016/j.ceramint.2017.07.138 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Milić, Mirjana
AU  - Jovanović, Sonja
AU  - Girman, Vladimir
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10288
AB  - Monodisperse samples of magnetite nanoparticles in the size range of 5-13nm, were prepared by solvothermal synthesis and coprecipitation method. Obtained nanoparticles were characterized by different measurement techniques: X-ray diffraction analysis, transmission electron microscopy, selected area electron diffraction measurement, and Fourier transform infra-red spectroscopy. Measurements confirmed that the utilized synthesis methods are able to produce size and shape-controlled nanoparticles of a high-quality, that is of the technological importance. The results of the performed study represent the first stage in preparation of the Fe3O4 nanoparticles as an additive to concrete, which will be used for the construction of the special military facilities where it is necessary to provide a protection against γ-ray radiation.
T2  - Scientific Technical Review
T1  - Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization
VL  - 67
IS  - 2
SP  - 20
EP  - 26
DO  - 10.5937/str1702020N
ER  - 

@article{
author = "Nikolić, Violeta N. and Milić, Mirjana and Jovanović, Sonja and Girman, Vladimir",
year = "2017",
abstract = "Monodisperse samples of magnetite nanoparticles in the size range of 5-13nm, were prepared by solvothermal synthesis and coprecipitation method. Obtained nanoparticles were characterized by different measurement techniques: X-ray diffraction analysis, transmission electron microscopy, selected area electron diffraction measurement, and Fourier transform infra-red spectroscopy. Measurements confirmed that the utilized synthesis methods are able to produce size and shape-controlled nanoparticles of a high-quality, that is of the technological importance. The results of the performed study represent the first stage in preparation of the Fe3O4 nanoparticles as an additive to concrete, which will be used for the construction of the special military facilities where it is necessary to provide a protection against γ-ray radiation.",
journal = "Scientific Technical Review",
title = "Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization",
volume = "67",
number = "2",
pages = "20-26",
doi = "10.5937/str1702020N"
}

Nikolić, V. N., Milić, M., Jovanović, S.,& Girman, V.. (2017). Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization. in Scientific Technical Review, 67(2), 20-26.
https://doi.org/10.5937/str1702020N

Nikolić VN, Milić M, Jovanović S, Girman V. Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization. in Scientific Technical Review. 2017;67(2):20-26.
doi:10.5937/str1702020N .

Nikolić, Violeta N., Milić, Mirjana, Jovanović, Sonja, Girman, Vladimir, "Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization" in Scientific Technical Review, 67, no. 2 (2017):20-26,
https://doi.org/10.5937/str1702020N . .

TY  - CONF
AU  - Milić, Mirjana M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9218
AB  - Conducting properties of REBa2Cu3O6+x(RE123) type high Tc
superconductors (RE=Y, 4f elements) are highly sensitive to the oxygen
order in the oxygen deficient CuOx planes which can be disrupted by doping
with different metals,thus leading to a change of the superconducting
transition temperature Tc. In this article we shall employ a simple theoretical
model of charge transfer to studyhow Tc(x) dependence is affected by the
increase of oxygen disorder in the CuOx planes, which is displayed in
reduced average CuO chain length, lav. The results indicate that though the
increased oxygen disorder can produce significant decrease in Tc, it cannot
be the only factor responsible forTc reduction in Zn doped RE123
superconductors.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Impact of oxygen disorder on Tc supression in Zn dopedreba2Cu3O6+x superocnductors
VL  - I-02-O
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9218
ER  - 

@conference{
author = "Milić, Mirjana M.",
year = "2014",
abstract = "Conducting properties of REBa2Cu3O6+x(RE123) type high Tc
superconductors (RE=Y, 4f elements) are highly sensitive to the oxygen
order in the oxygen deficient CuOx planes which can be disrupted by doping
with different metals,thus leading to a change of the superconducting
transition temperature Tc. In this article we shall employ a simple theoretical
model of charge transfer to studyhow Tc(x) dependence is affected by the
increase of oxygen disorder in the CuOx planes, which is displayed in
reduced average CuO chain length, lav. The results indicate that though the
increased oxygen disorder can produce significant decrease in Tc, it cannot
be the only factor responsible forTc reduction in Zn doped RE123
superconductors.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Impact of oxygen disorder on Tc supression in Zn dopedreba2Cu3O6+x superocnductors",
volume = "I-02-O",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9218"
}

Milić, M. M.. (2014). Impact of oxygen disorder on Tc supression in Zn dopedreba2Cu3O6+x superocnductors. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., I-02-O.
https://hdl.handle.net/21.15107/rcub_vinar_9218

Milić MM. Impact of oxygen disorder on Tc supression in Zn dopedreba2Cu3O6+x superocnductors. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;I-02-O.
https://hdl.handle.net/21.15107/rcub_vinar_9218 .

Milić, Mirjana M., "Impact of oxygen disorder on Tc supression in Zn dopedreba2Cu3O6+x superocnductors" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, I-02-O (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9218 .

TY  - JOUR
AU  - Matić, Vladimir M.
AU  - Lazarov, Nenad Đ.
AU  - Milić, Mirjana M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5270
AB  - The 60 K plateau of the YBa2Cu3O6+x high-T-c superconducting compound has traditionally been known as a horizontal section in its T-c(x) characteristics within which the critical temperature maintains at a constant level T-c approximate to 60 K. However, recent experiments on a series of high quality single crystals samples of the YBa2Cu3O6+x compound (produced by improved techniques of sample preparation) have shown the 60 K plateau does not manifest itself anymore as a horizontal section of the T-c(x), but emerges as a section over which T-c(x) keeps on continuously rising (the quasi 60 K plateau). Here we propose a theoretical model that explains how the classical (horizontal) 60 K plateau naturally evolves into the quasi 60 K plateau, due to the improved orthorhombicity in the high quality single crystal material accompanied by longer CuO chains. The model assumes that short CuO chains do not contribute to the hole transfer from chains to CuO2 layers, but only chains whose length is greater than, or equal to, a certain threshold length l(cr). Our calculations point to a conclusion that this minimal number of oxygen atoms in a CuO chain, that is required to trigger the hole transfer, is equal to four. The calculated values for T-c(x) are in a very good correlation with the corresponding experimentally obtained results. (C) 2012 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - A model for the quasi 60 K plateau in the YBa2Cu3O6+x high-T-c compound
VL  - 551
SP  - 189
EP  - 194
DO  - 10.1016/j.jallcom.2012.10.047
ER  - 

@article{
author = "Matić, Vladimir M. and Lazarov, Nenad Đ. and Milić, Mirjana M.",
year = "2013",
abstract = "The 60 K plateau of the YBa2Cu3O6+x high-T-c superconducting compound has traditionally been known as a horizontal section in its T-c(x) characteristics within which the critical temperature maintains at a constant level T-c approximate to 60 K. However, recent experiments on a series of high quality single crystals samples of the YBa2Cu3O6+x compound (produced by improved techniques of sample preparation) have shown the 60 K plateau does not manifest itself anymore as a horizontal section of the T-c(x), but emerges as a section over which T-c(x) keeps on continuously rising (the quasi 60 K plateau). Here we propose a theoretical model that explains how the classical (horizontal) 60 K plateau naturally evolves into the quasi 60 K plateau, due to the improved orthorhombicity in the high quality single crystal material accompanied by longer CuO chains. The model assumes that short CuO chains do not contribute to the hole transfer from chains to CuO2 layers, but only chains whose length is greater than, or equal to, a certain threshold length l(cr). Our calculations point to a conclusion that this minimal number of oxygen atoms in a CuO chain, that is required to trigger the hole transfer, is equal to four. The calculated values for T-c(x) are in a very good correlation with the corresponding experimentally obtained results. (C) 2012 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "A model for the quasi 60 K plateau in the YBa2Cu3O6+x high-T-c compound",
volume = "551",
pages = "189-194",
doi = "10.1016/j.jallcom.2012.10.047"
}

Matić, V. M., Lazarov, N. Đ.,& Milić, M. M.. (2013). A model for the quasi 60 K plateau in the YBa2Cu3O6+x high-T-c compound. in Journal of Alloys and Compounds, 551, 189-194.
https://doi.org/10.1016/j.jallcom.2012.10.047

Matić VM, Lazarov NĐ, Milić MM. A model for the quasi 60 K plateau in the YBa2Cu3O6+x high-T-c compound. in Journal of Alloys and Compounds. 2013;551:189-194.
doi:10.1016/j.jallcom.2012.10.047 .

Matić, Vladimir M., Lazarov, Nenad Đ., Milić, Mirjana M., "A model for the quasi 60 K plateau in the YBa2Cu3O6+x high-T-c compound" in Journal of Alloys and Compounds, 551 (2013):189-194,
https://doi.org/10.1016/j.jallcom.2012.10.047 . .

TY  - JOUR
AU  - Milić, Mirjana M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5254
AB  - Experimental results available in the literature were employed to study the high pressure dependence of the superconducting transition temperature T (c) of YBa2Cu3O (x) high-T (c) superconductor in a wide range of oxygen concentrations x. By the use of simple phenomenological model, we determined the T (c) (x) dependences at different constant values of pressure P to 35 GPa. We found that maximum T (c) which can be attained in YBa2Cu3O (x) material is approximately 131 K, and it is achieved for Pa parts per thousand 18 GPa in the sample with xa parts per thousand 6.74 and with zero pressure hole concentration n (h,0)a parts per thousand 0.11.
T2  - Journal of Low Temperature Physics
T1  - Study on the Pressure Effect in YBa2Cu3Ox as a Function Oxygen Content x
VL  - 170
IS  - 3-4
SP  - 152
EP  - 159
DO  - 10.1007/s10909-012-0774-5
ER  - 

@article{
author = "Milić, Mirjana M.",
year = "2013",
abstract = "Experimental results available in the literature were employed to study the high pressure dependence of the superconducting transition temperature T (c) of YBa2Cu3O (x) high-T (c) superconductor in a wide range of oxygen concentrations x. By the use of simple phenomenological model, we determined the T (c) (x) dependences at different constant values of pressure P to 35 GPa. We found that maximum T (c) which can be attained in YBa2Cu3O (x) material is approximately 131 K, and it is achieved for Pa parts per thousand 18 GPa in the sample with xa parts per thousand 6.74 and with zero pressure hole concentration n (h,0)a parts per thousand 0.11.",
journal = "Journal of Low Temperature Physics",
title = "Study on the Pressure Effect in YBa2Cu3Ox as a Function Oxygen Content x",
volume = "170",
number = "3-4",
pages = "152-159",
doi = "10.1007/s10909-012-0774-5"
}

Milić, M. M.. (2013). Study on the Pressure Effect in YBa2Cu3Ox as a Function Oxygen Content x. in Journal of Low Temperature Physics, 170(3-4), 152-159.
https://doi.org/10.1007/s10909-012-0774-5

Milić MM. Study on the Pressure Effect in YBa2Cu3Ox as a Function Oxygen Content x. in Journal of Low Temperature Physics. 2013;170(3-4):152-159.
doi:10.1007/s10909-012-0774-5 .

Milić, Mirjana M., "Study on the Pressure Effect in YBa2Cu3Ox as a Function Oxygen Content x" in Journal of Low Temperature Physics, 170, no. 3-4 (2013):152-159,
https://doi.org/10.1007/s10909-012-0774-5 . .

TY  - JOUR
AU  - Milić, Mirjana M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5439
AB  - Pressure effect on the critical temperature, T-c, of the YBa2Cu3Ox superconductor was considered in the frame of a simple theoretical model which as a starting point assumes that T-c vs. pressure, P, dependence can be described by an inverted parabola. Available experimental results on T-c behavior under pressure were analyzed as a function of the zero pressure hole concentration in the superconducting CuO2 planes, n(h)(P = 0 GPa)= n(h0), for different constant values of P. Maximum T-c that can be achieved under pressure was estimated and discussed in relation to the n(h0) = 1/8 doping and establishment of charge and spin order. The results obtained here were used to estimate increase of the hole concentration in the CuO2 planes which occurs as a result of pressure induced oxygen reordering.
T2  - Acta Physica Polonica A
T1  - Theoretical Study on the Pressure Induced T-c Change in YBa2Cu3Ox
VL  - 124
IS  - 4
SP  - 745
EP  - 749
UR  - https://hdl.handle.net/21.15107/rcub_vinar_5439
ER  - 

@article{
author = "Milić, Mirjana M.",
year = "2013",
abstract = "Pressure effect on the critical temperature, T-c, of the YBa2Cu3Ox superconductor was considered in the frame of a simple theoretical model which as a starting point assumes that T-c vs. pressure, P, dependence can be described by an inverted parabola. Available experimental results on T-c behavior under pressure were analyzed as a function of the zero pressure hole concentration in the superconducting CuO2 planes, n(h)(P = 0 GPa)= n(h0), for different constant values of P. Maximum T-c that can be achieved under pressure was estimated and discussed in relation to the n(h0) = 1/8 doping and establishment of charge and spin order. The results obtained here were used to estimate increase of the hole concentration in the CuO2 planes which occurs as a result of pressure induced oxygen reordering.",
journal = "Acta Physica Polonica A",
title = "Theoretical Study on the Pressure Induced T-c Change in YBa2Cu3Ox",
volume = "124",
number = "4",
pages = "745-749",
url = "https://hdl.handle.net/21.15107/rcub_vinar_5439"
}

Milić, M. M.. (2013). Theoretical Study on the Pressure Induced T-c Change in YBa2Cu3Ox. in Acta Physica Polonica A, 124(4), 745-749.
https://hdl.handle.net/21.15107/rcub_vinar_5439

Milić MM. Theoretical Study on the Pressure Induced T-c Change in YBa2Cu3Ox. in Acta Physica Polonica A. 2013;124(4):745-749.
https://hdl.handle.net/21.15107/rcub_vinar_5439 .

Milić, Mirjana M., "Theoretical Study on the Pressure Induced T-c Change in YBa2Cu3Ox" in Acta Physica Polonica A, 124, no. 4 (2013):745-749,
https://hdl.handle.net/21.15107/rcub_vinar_5439 .

TY  - JOUR
AU  - Milić, Mirjana M.
AU  - Lazarov, Nenad Đ.
AU  - Karbunar, Lazar
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4798
AB  - In the present study, we have employed two dimensional ASYNNNI model to investigate how the Ortho-II structure formation influences doping, p, of the superconducting CuO2 planes in YBa2Cu3O6+x high-T-c superconductor. It was shown, that if the direct repulsive interaction between next nearest oxygen atoms (V-3), present in the Hamiltonian of the ASYNNNI model, is neglected, the Ortho-II ordering is destroyed and doping p becomes a linearly increasing function of oxygen concentration x in the range 0.50 LT = x LT = 0.65, for any choice of critical chain length l(cr) (defined so that CuO chains of length l LT l(cr) cannot transfer holes to the CuO2 planes). Consequently, the T-c(x) dependence, obtained by the employment of the universal T-c vs. p relation, does not exhibit experimentally observed 60 K plateau. The results presented here confirm that establishment of Ortho-II structural phase is a key factor for the 60 K plateau formation in the T-c(x) dependence. (C) 2012 Elsevier B. V. All rights reserved.
T2  - Physica. C: Superconductivity and Its Applications
T1  - Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x
VL  - 476
SP  - 63
EP  - 67
DO  - 10.1016/j.physc.2012.02.008
ER  - 

@article{
author = "Milić, Mirjana M. and Lazarov, Nenad Đ. and Karbunar, Lazar",
year = "2012",
abstract = "In the present study, we have employed two dimensional ASYNNNI model to investigate how the Ortho-II structure formation influences doping, p, of the superconducting CuO2 planes in YBa2Cu3O6+x high-T-c superconductor. It was shown, that if the direct repulsive interaction between next nearest oxygen atoms (V-3), present in the Hamiltonian of the ASYNNNI model, is neglected, the Ortho-II ordering is destroyed and doping p becomes a linearly increasing function of oxygen concentration x in the range 0.50 LT = x LT = 0.65, for any choice of critical chain length l(cr) (defined so that CuO chains of length l LT l(cr) cannot transfer holes to the CuO2 planes). Consequently, the T-c(x) dependence, obtained by the employment of the universal T-c vs. p relation, does not exhibit experimentally observed 60 K plateau. The results presented here confirm that establishment of Ortho-II structural phase is a key factor for the 60 K plateau formation in the T-c(x) dependence. (C) 2012 Elsevier B. V. All rights reserved.",
journal = "Physica. C: Superconductivity and Its Applications",
title = "Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x",
volume = "476",
pages = "63-67",
doi = "10.1016/j.physc.2012.02.008"
}

Milić, M. M., Lazarov, N. Đ.,& Karbunar, L.. (2012). Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x. in Physica. C: Superconductivity and Its Applications, 476, 63-67.
https://doi.org/10.1016/j.physc.2012.02.008

Milić MM, Lazarov NĐ, Karbunar L. Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x. in Physica. C: Superconductivity and Its Applications. 2012;476:63-67.
doi:10.1016/j.physc.2012.02.008 .

Milić, Mirjana M., Lazarov, Nenad Đ., Karbunar, Lazar, "Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x" in Physica. C: Superconductivity and Its Applications, 476 (2012):63-67,
https://doi.org/10.1016/j.physc.2012.02.008 . .

TY  - JOUR
AU  - Matić, Vladimir M.
AU  - Lazarov, Nenad Đ.
AU  - Milić, Mirjana M.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5155
AB  - A model for the chain-to-plane charge transfer is proposed to account for the two plateaus, at 60 K and at 90 K, of the T-c(x) characteristics of the YBa2Cu3O6+x high-T-c superconductor. It is assumed that the number of holes transferred from a CuO chain of length l to two nearby CuO2 sheets is proportional to l (that is, to the number of oxygen atoms in the chain), if the chain length is greater than, or equal to, a certain critical chain length, l(cr), that is required to trigger the charge transfer process. No holes are assumed to have been transferred from chains of length l LT l(cr). The calculated T-c(x) dependence is found to be in excellent agreement with the experimentally reported T-c(x). The critical chain length parameter is estimated to be equal to l(cr) = 11 (eleven oxygen atoms in a chain), which is a greater value than that obtained in the previously proposed model for the chain-to-plane charge transfer (l(cr) = 4). The results obtained out of the proposed model are briefly discussed.
T2  - Chinese Physics B
T1  - A model for the chain-to-plane charge transfer in YBa2Cu3O6+x
VL  - 21
IS  - 11
DO  - 10.1088/1674-1056/21/11/117401
ER  - 

@article{
author = "Matić, Vladimir M. and Lazarov, Nenad Đ. and Milić, Mirjana M.",
year = "2012",
abstract = "A model for the chain-to-plane charge transfer is proposed to account for the two plateaus, at 60 K and at 90 K, of the T-c(x) characteristics of the YBa2Cu3O6+x high-T-c superconductor. It is assumed that the number of holes transferred from a CuO chain of length l to two nearby CuO2 sheets is proportional to l (that is, to the number of oxygen atoms in the chain), if the chain length is greater than, or equal to, a certain critical chain length, l(cr), that is required to trigger the charge transfer process. No holes are assumed to have been transferred from chains of length l LT l(cr). The calculated T-c(x) dependence is found to be in excellent agreement with the experimentally reported T-c(x). The critical chain length parameter is estimated to be equal to l(cr) = 11 (eleven oxygen atoms in a chain), which is a greater value than that obtained in the previously proposed model for the chain-to-plane charge transfer (l(cr) = 4). The results obtained out of the proposed model are briefly discussed.",
journal = "Chinese Physics B",
title = "A model for the chain-to-plane charge transfer in YBa2Cu3O6+x",
volume = "21",
number = "11",
doi = "10.1088/1674-1056/21/11/117401"
}

Matić, V. M., Lazarov, N. Đ.,& Milić, M. M.. (2012). A model for the chain-to-plane charge transfer in YBa2Cu3O6+x. in Chinese Physics B, 21(11).
https://doi.org/10.1088/1674-1056/21/11/117401

Matić VM, Lazarov NĐ, Milić MM. A model for the chain-to-plane charge transfer in YBa2Cu3O6+x. in Chinese Physics B. 2012;21(11).
doi:10.1088/1674-1056/21/11/117401 .

Matić, Vladimir M., Lazarov, Nenad Đ., Milić, Mirjana M., "A model for the chain-to-plane charge transfer in YBa2Cu3O6+x" in Chinese Physics B, 21, no. 11 (2012),
https://doi.org/10.1088/1674-1056/21/11/117401 . .

TY  - JOUR
AU  - Milić, Mirjana M.
AU  - Lazarov, Nenad Đ.
AU  - Cucic, D. A.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6961
AB  - Effect of the long term illumination of the YBa2Cu3O6+x with visible light or ultraviolet irradiation on its superconducting properties was studied in the frame of a simple theoretical model, which assumes that photodoping triggers rearrangement of oxygen monomers in the chain layers thus causing the enhancement of the average chain length, l(av). Since, according to the model of charge transfer mechanism, long CuO chains are better electronic hole donors than the short ones, increase of the average chain length induces additional holes transfer from chain layers to the superconducting CuO2 planes which in turn leads to the increase of the superconducting transition temperature T-c. By the use of the expression for the chain length probability distribution and numerically calculated values for the average chain length in the non-excited system, we were able to estimate the doping p (number of holes per one Cu atom in the superconducting CuO2 planes) and T-c enhancement due to photo-induced oxygen reordering. The theoretical results are compared with available experimental data. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Study on the photo-induced oxygen reordering in YBa2Cu3O6+x
VL  - 279
SP  - 212
EP  - 214
DO  - 10.1016/j.nimb.2011.10.035
ER  - 

@article{
author = "Milić, Mirjana M. and Lazarov, Nenad Đ. and Cucic, D. A.",
year = "2012",
abstract = "Effect of the long term illumination of the YBa2Cu3O6+x with visible light or ultraviolet irradiation on its superconducting properties was studied in the frame of a simple theoretical model, which assumes that photodoping triggers rearrangement of oxygen monomers in the chain layers thus causing the enhancement of the average chain length, l(av). Since, according to the model of charge transfer mechanism, long CuO chains are better electronic hole donors than the short ones, increase of the average chain length induces additional holes transfer from chain layers to the superconducting CuO2 planes which in turn leads to the increase of the superconducting transition temperature T-c. By the use of the expression for the chain length probability distribution and numerically calculated values for the average chain length in the non-excited system, we were able to estimate the doping p (number of holes per one Cu atom in the superconducting CuO2 planes) and T-c enhancement due to photo-induced oxygen reordering. The theoretical results are compared with available experimental data. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Study on the photo-induced oxygen reordering in YBa2Cu3O6+x",
volume = "279",
pages = "212-214",
doi = "10.1016/j.nimb.2011.10.035"
}

Milić, M. M., Lazarov, N. Đ.,& Cucic, D. A.. (2012). Study on the photo-induced oxygen reordering in YBa2Cu3O6+x. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279, 212-214.
https://doi.org/10.1016/j.nimb.2011.10.035

Milić MM, Lazarov NĐ, Cucic DA. Study on the photo-induced oxygen reordering in YBa2Cu3O6+x. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2012;279:212-214.
doi:10.1016/j.nimb.2011.10.035 .

Milić, Mirjana M., Lazarov, Nenad Đ., Cucic, D. A., "Study on the photo-induced oxygen reordering in YBa2Cu3O6+x" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279 (2012):212-214,
https://doi.org/10.1016/j.nimb.2011.10.035 . .

TY  - JOUR
AU  - Lazarov, Nenad Đ.
AU  - Milić, Mirjana M.
AU  - Cucic, D. A.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6962
AB  - In the present study, we have employed two dimensional ASYNNNI model and the numerical Monte Carlo simulations to investigate the effect of visible light or ultraviolet radiation on the doping p of the superconducting CuO2 planes, and consequently on the superconducting transition temperature T-c, in YBa2Cu3O6+x high-T-c superconductor. It was shown that, depending on the oxygen concentration, x, three regions of different critical temperatures T-c behavior could be distinguished. In the first region where x LT 0.6 the critical temperature increases rapidly with oxygen depletion, in the second region, 0.6 LT x LT 0.75, the total T-c change, delta T-c, is almost independent of the oxygen content thus forming some kind of plateau, while in the third region, 0.75 LT x LT 1.0, the T-c does not increase significantly. Such a theoretically obtained behavior of T-c is in general agreement with the experimentally established facts on the delta 7(c), vs. x dependence. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Effect of illumination on the superconducting transition temperature T-c in YBa2Cu3O6+x
VL  - 279
SP  - 215
EP  - 218
DO  - 10.1016/j.nimb.2011.10.044
ER  - 

@article{
author = "Lazarov, Nenad Đ. and Milić, Mirjana M. and Cucic, D. A.",
year = "2012",
abstract = "In the present study, we have employed two dimensional ASYNNNI model and the numerical Monte Carlo simulations to investigate the effect of visible light or ultraviolet radiation on the doping p of the superconducting CuO2 planes, and consequently on the superconducting transition temperature T-c, in YBa2Cu3O6+x high-T-c superconductor. It was shown that, depending on the oxygen concentration, x, three regions of different critical temperatures T-c behavior could be distinguished. In the first region where x LT 0.6 the critical temperature increases rapidly with oxygen depletion, in the second region, 0.6 LT x LT 0.75, the total T-c change, delta T-c, is almost independent of the oxygen content thus forming some kind of plateau, while in the third region, 0.75 LT x LT 1.0, the T-c does not increase significantly. Such a theoretically obtained behavior of T-c is in general agreement with the experimentally established facts on the delta 7(c), vs. x dependence. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Effect of illumination on the superconducting transition temperature T-c in YBa2Cu3O6+x",
volume = "279",
pages = "215-218",
doi = "10.1016/j.nimb.2011.10.044"
}

Lazarov, N. Đ., Milić, M. M.,& Cucic, D. A.. (2012). Effect of illumination on the superconducting transition temperature T-c in YBa2Cu3O6+x. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279, 215-218.
https://doi.org/10.1016/j.nimb.2011.10.044

Lazarov NĐ, Milić MM, Cucic DA. Effect of illumination on the superconducting transition temperature T-c in YBa2Cu3O6+x. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2012;279:215-218.
doi:10.1016/j.nimb.2011.10.044 .

Lazarov, Nenad Đ., Milić, Mirjana M., Cucic, D. A., "Effect of illumination on the superconducting transition temperature T-c in YBa2Cu3O6+x" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 279 (2012):215-218,
https://doi.org/10.1016/j.nimb.2011.10.044 . .

TY  - JOUR
AU  - Milić, Mirjana M.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4350
AB  - The model of photoassisted oxygen ordering assumes that the enhancement of the conducting properties of RBa2Cu3O6+x material during the light illumination, is the consequence of the CuOx plane oxygen atoms reordering into long chain fragments, which are known to be better hole dopants than the short ones. Some experimental results suggest that this process is performed mainly through the reaccomodation of the oxygen monomer units (isolated oxygen ions). In the present work concentration of oxygen monomers in the CuOx planes, which is assumed to be equal to the concentration of holes transferred out of the chain planes during the light illumination, is calculated as a function of oxygen content x, and delta T-c (photoinduced enhancement of the superconducting critical temperature T-c) was estimated for different oxygen concentrations. Numerically found values of the (delta T-c, are shown to be in good agreement with experimental findings. (C) 2011 Elsevier Ltd. All rights reserved.
T2  - Journal of Physics and Chemistry of Solids
T1  - Possible role of oxygen monomers reordering in the photoinduced charge transfer in RBa2Cu3O6+x material
VL  - 73
IS  - 1
SP  - 99
EP  - 103
DO  - 10.1016/j.jpcs.2011.10.010
ER  - 

@article{
author = "Milić, Mirjana M.",
year = "2012",
abstract = "The model of photoassisted oxygen ordering assumes that the enhancement of the conducting properties of RBa2Cu3O6+x material during the light illumination, is the consequence of the CuOx plane oxygen atoms reordering into long chain fragments, which are known to be better hole dopants than the short ones. Some experimental results suggest that this process is performed mainly through the reaccomodation of the oxygen monomer units (isolated oxygen ions). In the present work concentration of oxygen monomers in the CuOx planes, which is assumed to be equal to the concentration of holes transferred out of the chain planes during the light illumination, is calculated as a function of oxygen content x, and delta T-c (photoinduced enhancement of the superconducting critical temperature T-c) was estimated for different oxygen concentrations. Numerically found values of the (delta T-c, are shown to be in good agreement with experimental findings. (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "Journal of Physics and Chemistry of Solids",
title = "Possible role of oxygen monomers reordering in the photoinduced charge transfer in RBa2Cu3O6+x material",
volume = "73",
number = "1",
pages = "99-103",
doi = "10.1016/j.jpcs.2011.10.010"
}

Milić, M. M.. (2012). Possible role of oxygen monomers reordering in the photoinduced charge transfer in RBa2Cu3O6+x material. in Journal of Physics and Chemistry of Solids, 73(1), 99-103.
https://doi.org/10.1016/j.jpcs.2011.10.010

Milić MM. Possible role of oxygen monomers reordering in the photoinduced charge transfer in RBa2Cu3O6+x material. in Journal of Physics and Chemistry of Solids. 2012;73(1):99-103.
doi:10.1016/j.jpcs.2011.10.010 .

Milić, Mirjana M., "Possible role of oxygen monomers reordering in the photoinduced charge transfer in RBa2Cu3O6+x material" in Journal of Physics and Chemistry of Solids, 73, no. 1 (2012):99-103,
https://doi.org/10.1016/j.jpcs.2011.10.010 . .

TY  - JOUR
AU  - Milić, Mirjana M.
AU  - Matić, Vladimir M.
AU  - Lazarov, Nenad Đ.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4227
AB  - An extended ASYNNNI model, that beside nearest-neighbour and next-nearest neighbour O-O interactions in the basal plane also includes interactions between the three nearest oxygen atoms, is used to describe the statistics of CuO chain fragmentation and to calculate doping and T (c) in YBa2Cu3O6+x . Calculations were made by the Monte Carlo method employing the recently proposed charge transfer model that assumes only chains whose length is equal to, or exceeds, a characteristic (critical) length, l (cr) , can provide holes to the layers and contribute to doping p. The obtained p(x) is then combined with a universal T (c) versus p relation to yield T (c) (x) characteristics that correlate remarkably with those reported in recent experiments. The best coordination between theoretical and experimental T (c) (x) characteristics has been achieved for l (cr) = 2, implying that only isolated basal plane oxygen atoms (trivial chains) do not contribute holes to CuO2 layers.
T2  - Central European Journal of Physics
T1  - The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model
VL  - 9
IS  - 3
SP  - 690
EP  - 697
DO  - 10.2478/s11534-010-0060-6
ER  - 

@article{
author = "Milić, Mirjana M. and Matić, Vladimir M. and Lazarov, Nenad Đ.",
year = "2011",
abstract = "An extended ASYNNNI model, that beside nearest-neighbour and next-nearest neighbour O-O interactions in the basal plane also includes interactions between the three nearest oxygen atoms, is used to describe the statistics of CuO chain fragmentation and to calculate doping and T (c) in YBa2Cu3O6+x . Calculations were made by the Monte Carlo method employing the recently proposed charge transfer model that assumes only chains whose length is equal to, or exceeds, a characteristic (critical) length, l (cr) , can provide holes to the layers and contribute to doping p. The obtained p(x) is then combined with a universal T (c) versus p relation to yield T (c) (x) characteristics that correlate remarkably with those reported in recent experiments. The best coordination between theoretical and experimental T (c) (x) characteristics has been achieved for l (cr) = 2, implying that only isolated basal plane oxygen atoms (trivial chains) do not contribute holes to CuO2 layers.",
journal = "Central European Journal of Physics",
title = "The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model",
volume = "9",
number = "3",
pages = "690-697",
doi = "10.2478/s11534-010-0060-6"
}

Milić, M. M., Matić, V. M.,& Lazarov, N. Đ.. (2011). The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model. in Central European Journal of Physics, 9(3), 690-697.
https://doi.org/10.2478/s11534-010-0060-6

Milić MM, Matić VM, Lazarov NĐ. The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model. in Central European Journal of Physics. 2011;9(3):690-697.
doi:10.2478/s11534-010-0060-6 .

Milić, Mirjana M., Matić, Vladimir M., Lazarov, Nenad Đ., "The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model" in Central European Journal of Physics, 9, no. 3 (2011):690-697,
https://doi.org/10.2478/s11534-010-0060-6 . .

TY  - CONF
AU  - Milić, Mirjana M.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9333
AB  - In the present study experimental data available in the literature have been
employed to investigate behavior of the critical temperature Tc as a function of the
pressure P, in the YBa2Cu3O6+x high temperature superconductor (HTSC). We
estimated the maximal critical temperature Tc,max(P) which can be achieved in this
material under pressure applied at temperatures low enough to prevent oxygen
reordering. We found that it approximately equals to 114K corresponding to x ≈
0.77.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
T1  - Study on the dependence of the critical temperature Tc on pressure in YBa2Cu3O6+x
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9333
ER  - 

@conference{
author = "Milić, Mirjana M.",
year = "2010",
abstract = "In the present study experimental data available in the literature have been
employed to investigate behavior of the critical temperature Tc as a function of the
pressure P, in the YBa2Cu3O6+x high temperature superconductor (HTSC). We
estimated the maximal critical temperature Tc,max(P) which can be achieved in this
material under pressure applied at temperatures low enough to prevent oxygen
reordering. We found that it approximately equals to 114K corresponding to x ≈
0.77.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry",
title = "Study on the dependence of the critical temperature Tc on pressure in YBa2Cu3O6+x",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9333"
}

Milić, M. M.. (2010). Study on the dependence of the critical temperature Tc on pressure in YBa2Cu3O6+x. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia..
https://hdl.handle.net/21.15107/rcub_vinar_9333

Milić MM. Study on the dependence of the critical temperature Tc on pressure in YBa2Cu3O6+x. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry. 2010;.
https://hdl.handle.net/21.15107/rcub_vinar_9333 .

Milić, Mirjana M., "Study on the dependence of the critical temperature Tc on pressure in YBa2Cu3O6+x" in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry (2010),
https://hdl.handle.net/21.15107/rcub_vinar_9333 .

TY  - JOUR
AU  - Milić, Mirjana M.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3393
AB  - An expression for the chain length probability distribution p(l) of a one dimensional Ising chain was derived using the cluster variation method formalism, the p(l) being expressed through the pair cluster probabilities. It was shown numerically that the same expression also applies in the case of one dimensional chains formed along one of the next-nearest neighbor interactions included in the two dimensional ASYNNNI (Asymmetric Next-Nearest Neighbor Ising) model, widely used to describe the statistics of oxygen ordering in the basal CuO (x) planes of the YBa(2)Cu(3)O(6+x) type high-T (c) superconducting materials. Equivalency between ASYNNNI and 1d Ising model is discussed.
T2  - Central European Journal of Physics
T1  - Chain length probability distribution - equivalence of ASYNNNI and 1d Ising model
VL  - 6
IS  - 2
SP  - 311
EP  - 316
DO  - 10.2478/s11534-008-0054-9
ER  - 

@article{
author = "Milić, Mirjana M.",
year = "2008",
abstract = "An expression for the chain length probability distribution p(l) of a one dimensional Ising chain was derived using the cluster variation method formalism, the p(l) being expressed through the pair cluster probabilities. It was shown numerically that the same expression also applies in the case of one dimensional chains formed along one of the next-nearest neighbor interactions included in the two dimensional ASYNNNI (Asymmetric Next-Nearest Neighbor Ising) model, widely used to describe the statistics of oxygen ordering in the basal CuO (x) planes of the YBa(2)Cu(3)O(6+x) type high-T (c) superconducting materials. Equivalency between ASYNNNI and 1d Ising model is discussed.",
journal = "Central European Journal of Physics",
title = "Chain length probability distribution - equivalence of ASYNNNI and 1d Ising model",
volume = "6",
number = "2",
pages = "311-316",
doi = "10.2478/s11534-008-0054-9"
}

Milić, M. M.. (2008). Chain length probability distribution - equivalence of ASYNNNI and 1d Ising model. in Central European Journal of Physics, 6(2), 311-316.
https://doi.org/10.2478/s11534-008-0054-9

Milić MM. Chain length probability distribution - equivalence of ASYNNNI and 1d Ising model. in Central European Journal of Physics. 2008;6(2):311-316.
doi:10.2478/s11534-008-0054-9 .

Milić, Mirjana M., "Chain length probability distribution - equivalence of ASYNNNI and 1d Ising model" in Central European Journal of Physics, 6, no. 2 (2008):311-316,
https://doi.org/10.2478/s11534-008-0054-9 . .

TY  - JOUR
AU  - Milić, Mirjana M.
AU  - Lazarov, Nenad Đ.
AU  - Matić, Vladimir M.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6702
AB  - According to the charge transfer model of Kudinov et a]. the photoinduced enhancement of conductivity in YBa2Cu3O6+x material can be explained by the photoexcitation of electron-hole pairs, and the subsequent transfer of electrons to the oxygen deficient CuOx planes where they become trapped in the CuO chain fragments, while the holes remain free in the superconducting CUO2 planes contributing to the superconducting current. In this paper we have employed the numerical cluster variation method (CVM) and the recently established relation between chain probability distribution p(n) and the average chain length n(av), to calculate the number of electrons being captured in the unoccupied p orbitals of O- ions incorporated in the CuO chains, thus producing the free holes in the CUO2 planes. Our results support the standing that several processes make contribution to the effects of persistent photoconductivity and photoinduced superconductivity. (C) 2007 Elsevier B.V. All rights reserved.
T2  - Physica. C: Superconductivity and Its Applications
T1  - Cluster variation method investigation of photoinduced charge transfer in YBa2Cu3O6+x material
VL  - 460
SP  - 364
EP  - 365
DO  - 10.1016/j.physc.2007.03.051
ER  - 

@article{
author = "Milić, Mirjana M. and Lazarov, Nenad Đ. and Matić, Vladimir M.",
year = "2007",
abstract = "According to the charge transfer model of Kudinov et a]. the photoinduced enhancement of conductivity in YBa2Cu3O6+x material can be explained by the photoexcitation of electron-hole pairs, and the subsequent transfer of electrons to the oxygen deficient CuOx planes where they become trapped in the CuO chain fragments, while the holes remain free in the superconducting CUO2 planes contributing to the superconducting current. In this paper we have employed the numerical cluster variation method (CVM) and the recently established relation between chain probability distribution p(n) and the average chain length n(av), to calculate the number of electrons being captured in the unoccupied p orbitals of O- ions incorporated in the CuO chains, thus producing the free holes in the CUO2 planes. Our results support the standing that several processes make contribution to the effects of persistent photoconductivity and photoinduced superconductivity. (C) 2007 Elsevier B.V. All rights reserved.",
journal = "Physica. C: Superconductivity and Its Applications",
title = "Cluster variation method investigation of photoinduced charge transfer in YBa2Cu3O6+x material",
volume = "460",
pages = "364-365",
doi = "10.1016/j.physc.2007.03.051"
}

Milić, M. M., Lazarov, N. Đ.,& Matić, V. M.. (2007). Cluster variation method investigation of photoinduced charge transfer in YBa2Cu3O6+x material. in Physica. C: Superconductivity and Its Applications, 460, 364-365.
https://doi.org/10.1016/j.physc.2007.03.051

Milić MM, Lazarov NĐ, Matić VM. Cluster variation method investigation of photoinduced charge transfer in YBa2Cu3O6+x material. in Physica. C: Superconductivity and Its Applications. 2007;460:364-365.
doi:10.1016/j.physc.2007.03.051 .

Milić, Mirjana M., Lazarov, Nenad Đ., Matić, Vladimir M., "Cluster variation method investigation of photoinduced charge transfer in YBa2Cu3O6+x material" in Physica. C: Superconductivity and Its Applications, 460 (2007):364-365,
https://doi.org/10.1016/j.physc.2007.03.051 . .

TY  - CONF
AU  - Milić, Mirjana M.
AU  - Matić, Vladimir M.
AU  - Lazarov, Nenad Đ.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9458
AB  - The number of positive holes transferred from the CuOx basal planes to the superconducting CuO2 planes of YBa2Cu3O6+x material was calculated as a function of oxygen content x, by the use of numerical cluster variation method (CVM). The calculations were performed for the set of three different temperatures and for the different values of the parameter ξl which represents the ratio of the number m of divalent oxygen ions in the chain fragment and the total number l of oxygen ions in the chain fragment. The obtained hole count versus x dependence showed no plateau behavior for low temperatures (t=0.25 and t=0.35) while for t=0.45 indication of plateau behavior is present.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry
T1  - Cvm study of charge transfer in YBa2Cu3O6+x material
SP  - 570
EP  - 572
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9458
ER  - 

@conference{
author = "Milić, Mirjana M. and Matić, Vladimir M. and Lazarov, Nenad Đ.",
year = "2006",
abstract = "The number of positive holes transferred from the CuOx basal planes to the superconducting CuO2 planes of YBa2Cu3O6+x material was calculated as a function of oxygen content x, by the use of numerical cluster variation method (CVM). The calculations were performed for the set of three different temperatures and for the different values of the parameter ξl which represents the ratio of the number m of divalent oxygen ions in the chain fragment and the total number l of oxygen ions in the chain fragment. The obtained hole count versus x dependence showed no plateau behavior for low temperatures (t=0.25 and t=0.35) while for t=0.45 indication of plateau behavior is present.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry",
title = "Cvm study of charge transfer in YBa2Cu3O6+x material",
pages = "570-572",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9458"
}

Milić, M. M., Matić, V. M.,& Lazarov, N. Đ.. (2006). Cvm study of charge transfer in YBa2Cu3O6+x material. in Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry
Society of Physical Chemists of Serbia., 570-572.
https://hdl.handle.net/21.15107/rcub_vinar_9458

Milić MM, Matić VM, Lazarov NĐ. Cvm study of charge transfer in YBa2Cu3O6+x material. in Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry. 2006;:570-572.
https://hdl.handle.net/21.15107/rcub_vinar_9458 .

Milić, Mirjana M., Matić, Vladimir M., Lazarov, Nenad Đ., "Cvm study of charge transfer in YBa2Cu3O6+x material" in Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry (2006):570-572,
https://hdl.handle.net/21.15107/rcub_vinar_9458 .

TY  - JOUR
AU  - Matić, Vladimir M.
AU  - Lazarov, Nenad Đ.
AU  - Spasojević, Vojislav
AU  - Milić, Mirjana M.
AU  - Kusigerski, Vladan
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2890
AB  - Distribution of CuO chains in YBa2Cu3O6+2c, with respect to different chain lengths, has been studied in terms of the two dimensional asymmetric next-nearest-neighbor Ising (ASYNNNI) model, for the case of orthorhombic-I structural phase. If p(1) stands for the fraction of CuO chains of length l (l equals to number of oxygen atoms that are linked in the chain), the results obtained show that p(!) decreases monotonically with 1, very accurately fitting to p(!) = AB(l), as at very low temperatures so at a very high temperatures as well (ranking from approximate to 300 K to 1800 K), and at all values of oxygen concentration c. Both parameters A and B were found to depend on (c, T) only through a single quantity-the average length 1, (c, T) of CuO chains in the system. The expressions for A(I-av) = A(I-av(c, T)) and B(I-av) = B(Id, (c, T)), that were derived out of extensive Monte Carlo (MC) numerical simulations on the chain probability distribution p(1) and independently obtained values of I-av were found to be very accurately fulfilled at all calculated points of (c, T) space. The particular behavior of p(!) dependance has been assigned to 1d Ising model type of oxygen atom fluctuations along cooper mediated V-2 LT 0 bonds (i.e., along b crystallographic axes). The importance of knowing the exact form of p(, for evaluation of the number of transferred electronic holes from CuO chains to superconducting CuO2 layers, has been discussed together with its possible impact on the two-plateaus shape of T-c(c) dependance. (c) 2005 Elsevier B.V. All rights reserved.
T2  - Physica. C: Superconductivity and Its Applications
T1  - A Monte Carlo study on distribution of CuO chains in YBa2Cu3O6+2c
VL  - 421
IS  - 1-4
SP  - 49
EP  - 55
DO  - 10.1016/j.physc.2005.02.009
ER  - 

@article{
author = "Matić, Vladimir M. and Lazarov, Nenad Đ. and Spasojević, Vojislav and Milić, Mirjana M. and Kusigerski, Vladan",
year = "2005",
abstract = "Distribution of CuO chains in YBa2Cu3O6+2c, with respect to different chain lengths, has been studied in terms of the two dimensional asymmetric next-nearest-neighbor Ising (ASYNNNI) model, for the case of orthorhombic-I structural phase. If p(1) stands for the fraction of CuO chains of length l (l equals to number of oxygen atoms that are linked in the chain), the results obtained show that p(!) decreases monotonically with 1, very accurately fitting to p(!) = AB(l), as at very low temperatures so at a very high temperatures as well (ranking from approximate to 300 K to 1800 K), and at all values of oxygen concentration c. Both parameters A and B were found to depend on (c, T) only through a single quantity-the average length 1, (c, T) of CuO chains in the system. The expressions for A(I-av) = A(I-av(c, T)) and B(I-av) = B(Id, (c, T)), that were derived out of extensive Monte Carlo (MC) numerical simulations on the chain probability distribution p(1) and independently obtained values of I-av were found to be very accurately fulfilled at all calculated points of (c, T) space. The particular behavior of p(!) dependance has been assigned to 1d Ising model type of oxygen atom fluctuations along cooper mediated V-2 LT 0 bonds (i.e., along b crystallographic axes). The importance of knowing the exact form of p(, for evaluation of the number of transferred electronic holes from CuO chains to superconducting CuO2 layers, has been discussed together with its possible impact on the two-plateaus shape of T-c(c) dependance. (c) 2005 Elsevier B.V. All rights reserved.",
journal = "Physica. C: Superconductivity and Its Applications",
title = "A Monte Carlo study on distribution of CuO chains in YBa2Cu3O6+2c",
volume = "421",
number = "1-4",
pages = "49-55",
doi = "10.1016/j.physc.2005.02.009"
}

Matić, V. M., Lazarov, N. Đ., Spasojević, V., Milić, M. M.,& Kusigerski, V.. (2005). A Monte Carlo study on distribution of CuO chains in YBa2Cu3O6+2c. in Physica. C: Superconductivity and Its Applications, 421(1-4), 49-55.
https://doi.org/10.1016/j.physc.2005.02.009

Matić VM, Lazarov NĐ, Spasojević V, Milić MM, Kusigerski V. A Monte Carlo study on distribution of CuO chains in YBa2Cu3O6+2c. in Physica. C: Superconductivity and Its Applications. 2005;421(1-4):49-55.
doi:10.1016/j.physc.2005.02.009 .

Matić, Vladimir M., Lazarov, Nenad Đ., Spasojević, Vojislav, Milić, Mirjana M., Kusigerski, Vladan, "A Monte Carlo study on distribution of CuO chains in YBa2Cu3O6+2c" in Physica. C: Superconductivity and Its Applications, 421, no. 1-4 (2005):49-55,
https://doi.org/10.1016/j.physc.2005.02.009 . .