Ivetić, Tamara B.

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  • Ivetić, Tamara B. (7)

Author's Bibliography

Structure, electrochemical impedance and Raman spectroscopy of lithium-niobium-titanium-oxide ceramics for LTCC technology

Ivetić, Tamara B.; Xia, Yang; Benzine, Omar; Petrović, Jelena; Papan, Jelena; Lukić-Petrović, Svetlana R.; Litvinchuk, Alexander P.

(2021)

TY  - JOUR
AU  - Ivetić, Tamara B.
AU  - Xia, Yang
AU  - Benzine, Omar
AU  - Petrović, Jelena
AU  - Papan, Jelena
AU  - Lukić-Petrović, Svetlana R.
AU  - Litvinchuk, Alexander P.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9691
AB  - Resultsof Electrochemical Impedance Spectroscopy (EIS) are reported for lithium-niobium-titanium-oxide (LNTO) ceramics synthesized by a solid-state reaction method with two functional additives (MoO3 or ZnO) in the temperature range 323 K - 573 K and frequencies between 10−1 Hz and 107 Hz. Scanning electron microscopy (SEM) reveals a textured morphology of rod and plate-like particles that are typical for M-phase LNTO materials, while X-ray diffraction (XRD) analysis confirms the formation of an M-phase member compound with an approximate structure of Li7Nb3Ti5O21. Complex impedance analysis indicates that its overall electrical resistivity behavior depends mostly on the grain boundary processes. EIS analysis shows a negative temperature coefficient of resistance behavior (NTCR) in a defined temperature range in two LNTOs and thermal activation of the conduction mechanisms. The low dielectric constants of 5.5 and 12.1 at 1 MHz were found for the first and second LNTOs, respectively. Complimentary Raman spectroscopic measurements, despite very large crystallographic unit cell of LNTO, reveal only a small number of lines, which is the consequence of a “molecular” nature of materials.
T2  - Ceramics International
T1  - Structure, electrochemical impedance and Raman spectroscopy of lithium-niobium-titanium-oxide ceramics for LTCC technology
VL  - 47
IS  - 4
SP  - 4944
EP  - 4953
DO  - 10.1016/j.ceramint.2020.10.070
ER  - 
@article{
author = "Ivetić, Tamara B. and Xia, Yang and Benzine, Omar and Petrović, Jelena and Papan, Jelena and Lukić-Petrović, Svetlana R. and Litvinchuk, Alexander P.",
year = "2021",
abstract = "Resultsof Electrochemical Impedance Spectroscopy (EIS) are reported for lithium-niobium-titanium-oxide (LNTO) ceramics synthesized by a solid-state reaction method with two functional additives (MoO3 or ZnO) in the temperature range 323 K - 573 K and frequencies between 10−1 Hz and 107 Hz. Scanning electron microscopy (SEM) reveals a textured morphology of rod and plate-like particles that are typical for M-phase LNTO materials, while X-ray diffraction (XRD) analysis confirms the formation of an M-phase member compound with an approximate structure of Li7Nb3Ti5O21. Complex impedance analysis indicates that its overall electrical resistivity behavior depends mostly on the grain boundary processes. EIS analysis shows a negative temperature coefficient of resistance behavior (NTCR) in a defined temperature range in two LNTOs and thermal activation of the conduction mechanisms. The low dielectric constants of 5.5 and 12.1 at 1 MHz were found for the first and second LNTOs, respectively. Complimentary Raman spectroscopic measurements, despite very large crystallographic unit cell of LNTO, reveal only a small number of lines, which is the consequence of a “molecular” nature of materials.",
journal = "Ceramics International",
title = "Structure, electrochemical impedance and Raman spectroscopy of lithium-niobium-titanium-oxide ceramics for LTCC technology",
volume = "47",
number = "4",
pages = "4944-4953",
doi = "10.1016/j.ceramint.2020.10.070"
}
Ivetić, T. B., Xia, Y., Benzine, O., Petrović, J., Papan, J., Lukić-Petrović, S. R.,& Litvinchuk, A. P.. (2021). Structure, electrochemical impedance and Raman spectroscopy of lithium-niobium-titanium-oxide ceramics for LTCC technology. in Ceramics International, 47(4), 4944-4953.
https://doi.org/10.1016/j.ceramint.2020.10.070
Ivetić TB, Xia Y, Benzine O, Petrović J, Papan J, Lukić-Petrović SR, Litvinchuk AP. Structure, electrochemical impedance and Raman spectroscopy of lithium-niobium-titanium-oxide ceramics for LTCC technology. in Ceramics International. 2021;47(4):4944-4953.
doi:10.1016/j.ceramint.2020.10.070 .
Ivetić, Tamara B., Xia, Yang, Benzine, Omar, Petrović, Jelena, Papan, Jelena, Lukić-Petrović, Svetlana R., Litvinchuk, Alexander P., "Structure, electrochemical impedance and Raman spectroscopy of lithium-niobium-titanium-oxide ceramics for LTCC technology" in Ceramics International, 47, no. 4 (2021):4944-4953,
https://doi.org/10.1016/j.ceramint.2020.10.070 . .
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Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization

Ivetić, Tamara B.; Sekulić, Dalibor L.; Papan, Jelena; Guth, Imre O.; Petrović, Dragoslav M.; Lukić-Petrović, Svetlana R.

(2018)

TY  - JOUR
AU  - Ivetić, Tamara B.
AU  - Sekulić, Dalibor L.
AU  - Papan, Jelena
AU  - Guth, Imre O.
AU  - Petrović, Dragoslav M.
AU  - Lukić-Petrović, Svetlana R.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884218318674
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7813
AB  - This paper describes the processing, microstructure, optical and electrical properties of the nanocrystalline (NC) niobium and zinc doped titanium-tin-oxide (TTO:NZ) based ceramics. Variety of techniques was employed (X-ray diffraction, scanning electron microscopy, energy dispersive, Raman and impedance spectroscopy) in the characterization of the obtained TTO:NZ, which confirmed the formation of NC solid-solution matrix with Ti0.8Sn0.2O2 composition. A specific highly dense (approximately 97% of the theoretical density was reached) varistor like microstructure (matrix metal-oxide grains surrounded by the grain-boundary regions) and accordingly resembling electrical properties (breakdown electric field of approximately 130 V/mm and nonlinearity coefficient of α ≈ 6.5) were achieved through double cation doping and elected condition of the mechanochemical solid-state synthesis. Impedance response analysis of TTO:NZ ceramics by means of an equivalent electrical circuit based on the brick-layer model for polycrystalline materials revealed the presence of two temperature dependent electrical relaxation phenomena of the non-Debye type as well as the negative temperature coefficient of resistance behavior.
T2  - Ceramics International
T1  - Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization
VL  - 44
IS  - 15
SP  - 18987
EP  - 18995
DO  - 10.1016/j.ceramint.2018.07.139
ER  - 
@article{
author = "Ivetić, Tamara B. and Sekulić, Dalibor L. and Papan, Jelena and Guth, Imre O. and Petrović, Dragoslav M. and Lukić-Petrović, Svetlana R.",
year = "2018",
abstract = "This paper describes the processing, microstructure, optical and electrical properties of the nanocrystalline (NC) niobium and zinc doped titanium-tin-oxide (TTO:NZ) based ceramics. Variety of techniques was employed (X-ray diffraction, scanning electron microscopy, energy dispersive, Raman and impedance spectroscopy) in the characterization of the obtained TTO:NZ, which confirmed the formation of NC solid-solution matrix with Ti0.8Sn0.2O2 composition. A specific highly dense (approximately 97% of the theoretical density was reached) varistor like microstructure (matrix metal-oxide grains surrounded by the grain-boundary regions) and accordingly resembling electrical properties (breakdown electric field of approximately 130 V/mm and nonlinearity coefficient of α ≈ 6.5) were achieved through double cation doping and elected condition of the mechanochemical solid-state synthesis. Impedance response analysis of TTO:NZ ceramics by means of an equivalent electrical circuit based on the brick-layer model for polycrystalline materials revealed the presence of two temperature dependent electrical relaxation phenomena of the non-Debye type as well as the negative temperature coefficient of resistance behavior.",
journal = "Ceramics International",
title = "Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization",
volume = "44",
number = "15",
pages = "18987-18995",
doi = "10.1016/j.ceramint.2018.07.139"
}
Ivetić, T. B., Sekulić, D. L., Papan, J., Guth, I. O., Petrović, D. M.,& Lukić-Petrović, S. R.. (2018). Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization. in Ceramics International, 44(15), 18987-18995.
https://doi.org/10.1016/j.ceramint.2018.07.139
Ivetić TB, Sekulić DL, Papan J, Guth IO, Petrović DM, Lukić-Petrović SR. Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization. in Ceramics International. 2018;44(15):18987-18995.
doi:10.1016/j.ceramint.2018.07.139 .
Ivetić, Tamara B., Sekulić, Dalibor L., Papan, Jelena, Guth, Imre O., Petrović, Dragoslav M., Lukić-Petrović, Svetlana R., "Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization" in Ceramics International, 44, no. 15 (2018):18987-18995,
https://doi.org/10.1016/j.ceramint.2018.07.139 . .
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Structure and magnetic properties of Co3O4/SiO2 nanocomposite synthesized using combustion assisted sol-gel method

Ivetić, Tamara B.; Tadić, Marin; Jagodic, M.; Gyergyek, Sašo; Strbac, G. R.; Lukić-Petrović, Svetlana R.

(2016)

TY  - JOUR
AU  - Ivetić, Tamara B.
AU  - Tadić, Marin
AU  - Jagodic, M.
AU  - Gyergyek, Sašo
AU  - Strbac, G. R.
AU  - Lukić-Petrović, Svetlana R.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1316
AB  - This paper reports on novel cobalt oxide nanoparticles (NPs) embedded in an amorphous silica (SiO2) matrix, synthesized using a modified sol-gel method. SEM and TEM images show as-synthesized particles to aggregate in the shape of spheres and less than 5 nm in size, while XRD and SAED analysis both point to well crystallized cubic spinel cobalt oxide phase with an average crystallite size of about 4.6 nm. Raman analysis confirms the formation of cobalt (III) oxide (Co3O4) NPs. As-synthesized Co3O4 single-nanocrystallite has magnetic properties that correlate with finite size effects and uncompensated surface spins. Temperature dependence of ZFC-FC magnetization curves reveals a sharp peak around 10 K which corresponds to the blocking temperature. A Curie-Weiss behavior of magnetization above 25 K shows lower Neel temperature of the sample compared with its bulk counterpart T-N=40 K (possibly due to crystal defects and nano-dimensionality of the particles). The magnetic measurements exhibit high magnetization at low temperatures (M-s=54.3 emu/g) which can be associated with random canting of the particles surface spins and uncompensated spins in the core which tends to interact ferromagnetically at low temperatures. The initial magnetization curve falls out from the hysteresis loop at 5 K, which could be also the effect of surface spins. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Structure and magnetic properties of Co3O4/SiO2 nanocomposite synthesized using combustion assisted sol-gel method
VL  - 42
IS  - 16
SP  - 18312
EP  - 18317
DO  - 10.1016/j.ceramint.2016.08.159
ER  - 
@article{
author = "Ivetić, Tamara B. and Tadić, Marin and Jagodic, M. and Gyergyek, Sašo and Strbac, G. R. and Lukić-Petrović, Svetlana R.",
year = "2016",
abstract = "This paper reports on novel cobalt oxide nanoparticles (NPs) embedded in an amorphous silica (SiO2) matrix, synthesized using a modified sol-gel method. SEM and TEM images show as-synthesized particles to aggregate in the shape of spheres and less than 5 nm in size, while XRD and SAED analysis both point to well crystallized cubic spinel cobalt oxide phase with an average crystallite size of about 4.6 nm. Raman analysis confirms the formation of cobalt (III) oxide (Co3O4) NPs. As-synthesized Co3O4 single-nanocrystallite has magnetic properties that correlate with finite size effects and uncompensated surface spins. Temperature dependence of ZFC-FC magnetization curves reveals a sharp peak around 10 K which corresponds to the blocking temperature. A Curie-Weiss behavior of magnetization above 25 K shows lower Neel temperature of the sample compared with its bulk counterpart T-N=40 K (possibly due to crystal defects and nano-dimensionality of the particles). The magnetic measurements exhibit high magnetization at low temperatures (M-s=54.3 emu/g) which can be associated with random canting of the particles surface spins and uncompensated spins in the core which tends to interact ferromagnetically at low temperatures. The initial magnetization curve falls out from the hysteresis loop at 5 K, which could be also the effect of surface spins. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Structure and magnetic properties of Co3O4/SiO2 nanocomposite synthesized using combustion assisted sol-gel method",
volume = "42",
number = "16",
pages = "18312-18317",
doi = "10.1016/j.ceramint.2016.08.159"
}
Ivetić, T. B., Tadić, M., Jagodic, M., Gyergyek, S., Strbac, G. R.,& Lukić-Petrović, S. R.. (2016). Structure and magnetic properties of Co3O4/SiO2 nanocomposite synthesized using combustion assisted sol-gel method. in Ceramics International, 42(16), 18312-18317.
https://doi.org/10.1016/j.ceramint.2016.08.159
Ivetić TB, Tadić M, Jagodic M, Gyergyek S, Strbac GR, Lukić-Petrović SR. Structure and magnetic properties of Co3O4/SiO2 nanocomposite synthesized using combustion assisted sol-gel method. in Ceramics International. 2016;42(16):18312-18317.
doi:10.1016/j.ceramint.2016.08.159 .
Ivetić, Tamara B., Tadić, Marin, Jagodic, M., Gyergyek, Sašo, Strbac, G. R., Lukić-Petrović, Svetlana R., "Structure and magnetic properties of Co3O4/SiO2 nanocomposite synthesized using combustion assisted sol-gel method" in Ceramics International, 42, no. 16 (2016):18312-18317,
https://doi.org/10.1016/j.ceramint.2016.08.159 . .
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4
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Mechanochemical synthesis of YNbO4:Eu nanocrystalline powder and its structural, microstructural and photoluminescence properties

Dacanin, Lj R.; Dramićanin, Miroslav; Lukić-Petrović, Svetlana R.; Petrović, Dragoslav M.; Nikolic, M. G.; Ivetić, Tamara B.; Guth, Imre O.

(2014)

TY  - JOUR
AU  - Dacanin, Lj R.
AU  - Dramićanin, Miroslav
AU  - Lukić-Petrović, Svetlana R.
AU  - Petrović, Dragoslav M.
AU  - Nikolic, M. G.
AU  - Ivetić, Tamara B.
AU  - Guth, Imre O.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5971
AB  - In this research we prepared nanocrystalline YNbO4:Eu3+ phosphor, i.e. nanophosphor, powder using an efficient mechanochemical method followed by annealing. X-ray diffraction analysis revealed that YNbO4:Eu3+ crystallizes in monoclinic structure C2/c where, from the point of view of A and B in ABO(4) compounds, cation coordination can be noted as [6+2, 4+2]. Crystallite size of about 40 nm, was estimated using Debye Scherrers equation. Raman spectroscopy with 785 and 532 rim excitation wavelengths is performed to record a majority of materials phonon modes and to provide more in depth understanding of the YNbO4 structure. Scanning electron microscopy observations indicate that the mechanical treatment during synthesis is causing non-uniformity of the powder microstructure. High resolution photoluminescent measurements upon UV excitation showed intense emission coming from f-f transitions of the europium ion with the lifetime of 0.68 ms, suggesting that the obtained YNbO4:Eu3+ is a good potential phosphor. A comparison of emissive properties with microcrystalline YNbO4:Eu3+ was made and it showed higher values of emission intensity and lifetime of the nanocrystalline sample.(C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Mechanochemical synthesis of YNbO4:Eu nanocrystalline powder and its structural, microstructural and photoluminescence properties
VL  - 40
IS  - 6
SP  - 8281
EP  - 8286
DO  - 10.1016/j.ceramint.2014.01.028
ER  - 
@article{
author = "Dacanin, Lj R. and Dramićanin, Miroslav and Lukić-Petrović, Svetlana R. and Petrović, Dragoslav M. and Nikolic, M. G. and Ivetić, Tamara B. and Guth, Imre O.",
year = "2014",
abstract = "In this research we prepared nanocrystalline YNbO4:Eu3+ phosphor, i.e. nanophosphor, powder using an efficient mechanochemical method followed by annealing. X-ray diffraction analysis revealed that YNbO4:Eu3+ crystallizes in monoclinic structure C2/c where, from the point of view of A and B in ABO(4) compounds, cation coordination can be noted as [6+2, 4+2]. Crystallite size of about 40 nm, was estimated using Debye Scherrers equation. Raman spectroscopy with 785 and 532 rim excitation wavelengths is performed to record a majority of materials phonon modes and to provide more in depth understanding of the YNbO4 structure. Scanning electron microscopy observations indicate that the mechanical treatment during synthesis is causing non-uniformity of the powder microstructure. High resolution photoluminescent measurements upon UV excitation showed intense emission coming from f-f transitions of the europium ion with the lifetime of 0.68 ms, suggesting that the obtained YNbO4:Eu3+ is a good potential phosphor. A comparison of emissive properties with microcrystalline YNbO4:Eu3+ was made and it showed higher values of emission intensity and lifetime of the nanocrystalline sample.(C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Mechanochemical synthesis of YNbO4:Eu nanocrystalline powder and its structural, microstructural and photoluminescence properties",
volume = "40",
number = "6",
pages = "8281-8286",
doi = "10.1016/j.ceramint.2014.01.028"
}
Dacanin, L. R., Dramićanin, M., Lukić-Petrović, S. R., Petrović, D. M., Nikolic, M. G., Ivetić, T. B.,& Guth, I. O.. (2014). Mechanochemical synthesis of YNbO4:Eu nanocrystalline powder and its structural, microstructural and photoluminescence properties. in Ceramics International, 40(6), 8281-8286.
https://doi.org/10.1016/j.ceramint.2014.01.028
Dacanin LR, Dramićanin M, Lukić-Petrović SR, Petrović DM, Nikolic MG, Ivetić TB, Guth IO. Mechanochemical synthesis of YNbO4:Eu nanocrystalline powder and its structural, microstructural and photoluminescence properties. in Ceramics International. 2014;40(6):8281-8286.
doi:10.1016/j.ceramint.2014.01.028 .
Dacanin, Lj R., Dramićanin, Miroslav, Lukić-Petrović, Svetlana R., Petrović, Dragoslav M., Nikolic, M. G., Ivetić, Tamara B., Guth, Imre O., "Mechanochemical synthesis of YNbO4:Eu nanocrystalline powder and its structural, microstructural and photoluminescence properties" in Ceramics International, 40, no. 6 (2014):8281-8286,
https://doi.org/10.1016/j.ceramint.2014.01.028 . .
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8
8

Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn

Nikolić, Maria Vesna; Slankamenac, Miloš P.; Nikolić, N.; Sekulić, D. I.; Aleksić, Obrad S.; Mitrić, Miodrag; Ivetić, Tamara B.; Pavlović, Vladimir B.; Nikolić, Pantelija

(Belgrade : Serbian Ceramic Society, 2012)

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Slankamenac, Miloš P.
AU  - Nikolić, N.
AU  - Sekulić, D. I.
AU  - Aleksić, Obrad S.
AU  - Mitrić, Miodrag
AU  - Ivetić, Tamara B.
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Pantelija
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/523
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/790
UR  - http://www.itn.sanu.ac.rs/opus4/files/790/Nikolic-MV_ACAI.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7467
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
PB  - Belgrade : Serbian Ceramic Society
C3  - The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
T1  - Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn
SP  - 8
EP  - 8
ER  - 
@conference{
author = "Nikolić, Maria Vesna and Slankamenac, Miloš P. and Nikolić, N. and Sekulić, D. I. and Aleksić, Obrad S. and Mitrić, Miodrag and Ivetić, Tamara B. and Pavlović, Vladimir B. and Nikolić, Pantelija",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts",
title = "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn",
pages = "8-8"
}
Nikolić, M. V., Slankamenac, M. P., Nikolić, N., Sekulić, D. I., Aleksić, O. S., Mitrić, M., Ivetić, T. B., Pavlović, V. B.,& Nikolić, P.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
Belgrade : Serbian Ceramic Society., 8-8.
Nikolić MV, Slankamenac MP, Nikolić N, Sekulić DI, Aleksić OS, Mitrić M, Ivetić TB, Pavlović VB, Nikolić P. Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts. 2012;:8-8..
Nikolić, Maria Vesna, Slankamenac, Miloš P., Nikolić, N., Sekulić, D. I., Aleksić, Obrad S., Mitrić, Miodrag, Ivetić, Tamara B., Pavlović, Vladimir B., Nikolić, Pantelija, "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn" in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts (2012):8-8.

Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn

Nikolic, M. V.; Slankamenac, Miloš P.; Nikolic, N.; Sekulić, Dalibor L.; Aleksić, Obrad S.; Mitrić, Miodrag; Ivetić, Tamara B.; Pavlović, Vladimir B.; Nikolic, P. M.

(2012)

TY  - JOUR
AU  - Nikolic, M. V.
AU  - Slankamenac, Miloš P.
AU  - Nikolic, N.
AU  - Sekulić, Dalibor L.
AU  - Aleksić, Obrad S.
AU  - Mitrić, Miodrag
AU  - Ivetić, Tamara B.
AU  - Pavlović, Vladimir B.
AU  - Nikolic, P. M.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5469
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225 degrees C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
T2  - Science of Sintering
T1  - Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn
VL  - 44
IS  - 3
SP  - 307
EP  - 321
DO  - 10.2298/SOS1203307N
ER  - 
@article{
author = "Nikolic, M. V. and Slankamenac, Miloš P. and Nikolic, N. and Sekulić, Dalibor L. and Aleksić, Obrad S. and Mitrić, Miodrag and Ivetić, Tamara B. and Pavlović, Vladimir B. and Nikolic, P. M.",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225 degrees C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
journal = "Science of Sintering",
title = "Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn",
volume = "44",
number = "3",
pages = "307-321",
doi = "10.2298/SOS1203307N"
}
Nikolic, M. V., Slankamenac, M. P., Nikolic, N., Sekulić, D. L., Aleksić, O. S., Mitrić, M., Ivetić, T. B., Pavlović, V. B.,& Nikolic, P. M.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn. in Science of Sintering, 44(3), 307-321.
https://doi.org/10.2298/SOS1203307N
Nikolic MV, Slankamenac MP, Nikolic N, Sekulić DL, Aleksić OS, Mitrić M, Ivetić TB, Pavlović VB, Nikolic PM. Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn. in Science of Sintering. 2012;44(3):307-321.
doi:10.2298/SOS1203307N .
Nikolic, M. V., Slankamenac, Miloš P., Nikolic, N., Sekulić, Dalibor L., Aleksić, Obrad S., Mitrić, Miodrag, Ivetić, Tamara B., Pavlović, Vladimir B., Nikolic, P. M., "Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn" in Science of Sintering, 44, no. 3 (2012):307-321,
https://doi.org/10.2298/SOS1203307N . .
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Endohedral encapsulation of lithium in C-70

Veljković, Miomir V.; Nešković, Olivera M.; Ivetić, Tamara B.; Veličković, Suzana; Maksin, Tatjana N.

(2005)

TY  - JOUR
AU  - Veljković, Miomir V.
AU  - Nešković, Olivera M.
AU  - Ivetić, Tamara B.
AU  - Veličković, Suzana
AU  - Maksin, Tatjana N.
PY  - 2005
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6502
UR  - https://plus.sr.cobiss.net/opac7/bib/1027650997
AB  - A new diatomic molecule-containing endohedral fullerenes were prepared by ion implantation technique (introducing negatively charged C-70 into a low temperature lithium plasma column by a strong exial magnetic field). The species prepared were Li"C-70 and Li-2"C-70 and ionized by surface ionization. Their existance was demonstrated through high sensitivity, magnetic mass spectrometer. The corresponding endohedral ions undergo the Rice shrinkwrap mechanism: a mass -analyzed ion spectrum demonstrates the loss of a C-2 unit from the cage. The observed ionization energies of endohedral molecules were 5.1 for all 0.1 eV and 5.3 for all 0.1 eV, respectively.
T2  - Materials Science Forum
T1  - Endohedral encapsulation of lithium in C-70
VL  - 480
SP  - 351
EP  - 354
DO  - 10.4028/www.scientific.net/MSF.480-481.351
ER  - 
@article{
author = "Veljković, Miomir V. and Nešković, Olivera M. and Ivetić, Tamara B. and Veličković, Suzana and Maksin, Tatjana N.",
year = "2005",
abstract = "A new diatomic molecule-containing endohedral fullerenes were prepared by ion implantation technique (introducing negatively charged C-70 into a low temperature lithium plasma column by a strong exial magnetic field). The species prepared were Li"C-70 and Li-2"C-70 and ionized by surface ionization. Their existance was demonstrated through high sensitivity, magnetic mass spectrometer. The corresponding endohedral ions undergo the Rice shrinkwrap mechanism: a mass -analyzed ion spectrum demonstrates the loss of a C-2 unit from the cage. The observed ionization energies of endohedral molecules were 5.1 for all 0.1 eV and 5.3 for all 0.1 eV, respectively.",
journal = "Materials Science Forum",
title = "Endohedral encapsulation of lithium in C-70",
volume = "480",
pages = "351-354",
doi = "10.4028/www.scientific.net/MSF.480-481.351"
}
Veljković, M. V., Nešković, O. M., Ivetić, T. B., Veličković, S.,& Maksin, T. N.. (2005). Endohedral encapsulation of lithium in C-70. in Materials Science Forum, 480, 351-354.
https://doi.org/10.4028/www.scientific.net/MSF.480-481.351
Veljković MV, Nešković OM, Ivetić TB, Veličković S, Maksin TN. Endohedral encapsulation of lithium in C-70. in Materials Science Forum. 2005;480:351-354.
doi:10.4028/www.scientific.net/MSF.480-481.351 .
Veljković, Miomir V., Nešković, Olivera M., Ivetić, Tamara B., Veličković, Suzana, Maksin, Tatjana N., "Endohedral encapsulation of lithium in C-70" in Materials Science Forum, 480 (2005):351-354,
https://doi.org/10.4028/www.scientific.net/MSF.480-481.351 . .
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