TY  - CONF
AU  - Čebela, Maria
AU  - Reddy, Priyanka
AU  - Čakar, Uroš
AU  - Labus, Nebojša
AU  - Lojpur, Vesna
AU  - Dodevski, Vladimir
AU  - Rosić, Milena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11475
AB  - Iron(III) titanates are attracting rapidly growing interest as very promising candidates for applications in solar energy and optoelectronics because they contain earth-rich elements. Potentially, Fe2TiO5 is a thermoelectric material. We used a Vibrating Sample Magnetometer and Superconducting Quantum Interferometer Device Magnetometer to study the magnetic properties of the pseudobrookite material Fe2TiO5. The material was synthesized by the sol-gel method. The structural parameters of the synthesized samples were investigated by X-ray analysis. The diffractogram was refined with the help of Rietveld refinement on FullProf Suite. Temperature-dependent ZFC and FC magnetization was measured on SQUID for lower temperature down to 2 K and on VSM for higher temperatures up to 1000 K. A transition was observed at 815 K with a separation between the ZFC and FC curves. Parallelly the bifurcation in the isothermal hysteresis measurements indicates that the system exhibits dominant canted AFM (or weak FM) with a small amount of spin glass. The small value of the moment was also pointing towards the canted AFM ordering. The size and morphology of the particles was determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Synthesis, structure and magnetic properties of Fe2TiO5
SP  - 124
EP  - 124
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11475
ER  - 

@conference{
author = "Čebela, Maria and Reddy, Priyanka and Čakar, Uroš and Labus, Nebojša and Lojpur, Vesna and Dodevski, Vladimir and Rosić, Milena",
year = "2023",
abstract = "Iron(III) titanates are attracting rapidly growing interest as very promising candidates for applications in solar energy and optoelectronics because they contain earth-rich elements. Potentially, Fe2TiO5 is a thermoelectric material. We used a Vibrating Sample Magnetometer and Superconducting Quantum Interferometer Device Magnetometer to study the magnetic properties of the pseudobrookite material Fe2TiO5. The material was synthesized by the sol-gel method. The structural parameters of the synthesized samples were investigated by X-ray analysis. The diffractogram was refined with the help of Rietveld refinement on FullProf Suite. Temperature-dependent ZFC and FC magnetization was measured on SQUID for lower temperature down to 2 K and on VSM for higher temperatures up to 1000 K. A transition was observed at 815 K with a separation between the ZFC and FC curves. Parallelly the bifurcation in the isothermal hysteresis measurements indicates that the system exhibits dominant canted AFM (or weak FM) with a small amount of spin glass. The small value of the moment was also pointing towards the canted AFM ordering. The size and morphology of the particles was determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Synthesis, structure and magnetic properties of Fe2TiO5",
pages = "124-124",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11475"
}

Čebela, M., Reddy, P., Čakar, U., Labus, N., Lojpur, V., Dodevski, V.,& Rosić, M.. (2023). Synthesis, structure and magnetic properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research., 124-124.
https://hdl.handle.net/21.15107/rcub_vinar_11475

Čebela M, Reddy P, Čakar U, Labus N, Lojpur V, Dodevski V, Rosić M. Synthesis, structure and magnetic properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;:124-124.
https://hdl.handle.net/21.15107/rcub_vinar_11475 .

Čebela, Maria, Reddy, Priyanka, Čakar, Uroš, Labus, Nebojša, Lojpur, Vesna, Dodevski, Vladimir, Rosić, Milena, "Synthesis, structure and magnetic properties of Fe2TiO5" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023):124-124,
https://hdl.handle.net/21.15107/rcub_vinar_11475 .

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Labus, Nebojša
AU  - Radović, Marko
AU  - Aškrabić, Sonja
AU  - Dohčević-Mitrović, Zorana
AU  - Stojmenović, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11482
AB  - Ca1-xGdxMnO3 (x = 0.05–0.20) nanostructured perovskites were successfully synthesized by modified glycine nitrate procedure (MGNP). Temperature intervals of sintering and phase transition during heating were revealed during dilatometric measurements. In order to determine the band gap values of the tested samples, ellipsometric measurements were performed in the UV-VIS spectral range. Decrease of band gap values with increase of Gd dopant content was attributed to n-type doping and upward shifting of the Fermi level in the conduction band. The investigation of the crystal structure and phase content of nanocrystalline Ca1- xGdxMnO3 powders was continued using micro-Raman spectroscopy. The electrical conductivity of Gd3+ doped sintered samples CaMnO3 as a function of temperature was measured by electrochemical impedance spectroscopy (EIS), in the temperature range of 400–700 °C. The corresponding activation energies of conductivity, measured in the investigated temperature range, were also discussed. The obtained research results showed that the highest hardness values of 7.58 GPa respectively, were achieved and that these nanostructured materials can be used as a high-density ceramic material for various industrial applications.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites
SP  - 119
EP  - 119
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11482
ER  - 

@conference{
author = "Rosić, Milena and Čebela, Maria and Labus, Nebojša and Radović, Marko and Aškrabić, Sonja and Dohčević-Mitrović, Zorana and Stojmenović, Marija",
year = "2023",
abstract = "Ca1-xGdxMnO3 (x = 0.05–0.20) nanostructured perovskites were successfully synthesized by modified glycine nitrate procedure (MGNP). Temperature intervals of sintering and phase transition during heating were revealed during dilatometric measurements. In order to determine the band gap values of the tested samples, ellipsometric measurements were performed in the UV-VIS spectral range. Decrease of band gap values with increase of Gd dopant content was attributed to n-type doping and upward shifting of the Fermi level in the conduction band. The investigation of the crystal structure and phase content of nanocrystalline Ca1- xGdxMnO3 powders was continued using micro-Raman spectroscopy. The electrical conductivity of Gd3+ doped sintered samples CaMnO3 as a function of temperature was measured by electrochemical impedance spectroscopy (EIS), in the temperature range of 400–700 °C. The corresponding activation energies of conductivity, measured in the investigated temperature range, were also discussed. The obtained research results showed that the highest hardness values of 7.58 GPa respectively, were achieved and that these nanostructured materials can be used as a high-density ceramic material for various industrial applications.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites",
pages = "119-119",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11482"
}

Rosić, M., Čebela, M., Labus, N., Radović, M., Aškrabić, S., Dohčević-Mitrović, Z.,& Stojmenović, M.. (2023). Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research., 119-119.
https://hdl.handle.net/21.15107/rcub_vinar_11482

Rosić M, Čebela M, Labus N, Radović M, Aškrabić S, Dohčević-Mitrović Z, Stojmenović M. Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;:119-119.
https://hdl.handle.net/21.15107/rcub_vinar_11482 .

Rosić, Milena, Čebela, Maria, Labus, Nebojša, Radović, Marko, Aškrabić, Sonja, Dohčević-Mitrović, Zorana, Stojmenović, Marija, "Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023):119-119,
https://hdl.handle.net/21.15107/rcub_vinar_11482 .

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Labus, Nebojša
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11516
AB  - Nanometric size Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) powder particles with perovskite-type structure were obtained by applying a modified glycine-nitrate procedure. [1, 2] All samples were investigated by X-ray diffraction (XRD), Infrared (IR) spectroscopy and EPR (electron paramagnetic resonance) measurements. In the perovskites with space group Pnma, octahedral tilting is most common and it is of great interest for geologists and materials science. It was experimentally observed how the amount of gadolinium dopants affects on the Mn-O bonds angles and distances, MnO6 octahedral tilting, the deformation due to the presence of Jahn-Teller distortion around the Mn3+ cation and relation between the structural and magnetic behavior. [3] The infrared reflection spectra of Ca1-xGdxMnO3 samples confirmed XRD results that Ca1-xGdxMnO3 nanopowders are of Pnma-1 structure and that the octahedral tilting is increased with Gd doping. The EPR spectra are in agreement with the expectation that EPR linewidth depend of Mn-O-Mn angle and that small octahedral tilting brought only a small change of the EPR linewidth.
PB  - University of Belgrade : Faculty of Physical Chemistry
C3  - COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade
T1  - Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound
SP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11516
ER  - 

@conference{
author = "Rosić, Milena and Čebela, Maria and Labus, Nebojša",
year = "2022",
abstract = "Nanometric size Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) powder particles with perovskite-type structure were obtained by applying a modified glycine-nitrate procedure. [1, 2] All samples were investigated by X-ray diffraction (XRD), Infrared (IR) spectroscopy and EPR (electron paramagnetic resonance) measurements. In the perovskites with space group Pnma, octahedral tilting is most common and it is of great interest for geologists and materials science. It was experimentally observed how the amount of gadolinium dopants affects on the Mn-O bonds angles and distances, MnO6 octahedral tilting, the deformation due to the presence of Jahn-Teller distortion around the Mn3+ cation and relation between the structural and magnetic behavior. [3] The infrared reflection spectra of Ca1-xGdxMnO3 samples confirmed XRD results that Ca1-xGdxMnO3 nanopowders are of Pnma-1 structure and that the octahedral tilting is increased with Gd doping. The EPR spectra are in agreement with the expectation that EPR linewidth depend of Mn-O-Mn angle and that small octahedral tilting brought only a small change of the EPR linewidth.",
publisher = "University of Belgrade : Faculty of Physical Chemistry",
journal = "COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade",
title = "Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound",
pages = "44",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11516"
}

Rosić, M., Čebela, M.,& Labus, N.. (2022). Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound. in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade
University of Belgrade : Faculty of Physical Chemistry., 44.
https://hdl.handle.net/21.15107/rcub_vinar_11516

Rosić M, Čebela M, Labus N. Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound. in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade. 2022;:44.
https://hdl.handle.net/21.15107/rcub_vinar_11516 .

Rosić, Milena, Čebela, Maria, Labus, Nebojša, "Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound" in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade (2022):44,
https://hdl.handle.net/21.15107/rcub_vinar_11516 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Čebela, Maria
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11517
AB  - Oxidation processes during metal oxide heat treatment are important events that can be monitored by the means of well-known TGA/DTA and dimensional change diagrams. Powders Mn0.63Zn0.37Fe2O4 oxide was milled in different time duration and thermal analysis techniques afterwards during heating were observed. Cation that serves this purpose well for is Mn ion that passes through Mn2+ to Mn3+ state at 360 °C by oxidation and after that from Mn4+ to Mn3+ reduction process at 580 °C. Minimal data treatment of first derivative on shrinkage for obtaining shrinkage rate diagrams and as well first derivative on thermal gravimetric diagram for obtaining differential thermal gravimetric analysis diagram enable the oxidation and reduction processes monitoring.
PB  - University of Belgrade : Faculty of Physical Chemistry
C3  - COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade
T1  - Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means
SP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11517
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Čebela, Maria",
year = "2022",
abstract = "Oxidation processes during metal oxide heat treatment are important events that can be monitored by the means of well-known TGA/DTA and dimensional change diagrams. Powders Mn0.63Zn0.37Fe2O4 oxide was milled in different time duration and thermal analysis techniques afterwards during heating were observed. Cation that serves this purpose well for is Mn ion that passes through Mn2+ to Mn3+ state at 360 °C by oxidation and after that from Mn4+ to Mn3+ reduction process at 580 °C. Minimal data treatment of first derivative on shrinkage for obtaining shrinkage rate diagrams and as well first derivative on thermal gravimetric diagram for obtaining differential thermal gravimetric analysis diagram enable the oxidation and reduction processes monitoring.",
publisher = "University of Belgrade : Faculty of Physical Chemistry",
journal = "COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade",
title = "Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means",
pages = "43",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11517"
}

Labus, N., Rosić, M.,& Čebela, M.. (2022). Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means. in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade
University of Belgrade : Faculty of Physical Chemistry., 43.
https://hdl.handle.net/21.15107/rcub_vinar_11517

Labus N, Rosić M, Čebela M. Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means. in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade. 2022;:43.
https://hdl.handle.net/21.15107/rcub_vinar_11517 .

Labus, Nebojša, Rosić, Milena, Čebela, Maria, "Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means" in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade (2022):43,
https://hdl.handle.net/21.15107/rcub_vinar_11517 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Gulicovski, Jelena
AU  - Čebela, Maria
AU  - Rosić, Milena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11505
AB  - Nanocrystalline powders of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, and 0.2) have been synthesized by the modified glycine nitrate procedure and pressed into pellets that served as green bodies for a systematic investigation on their structural and microstructural properties [1]. Dilatometric measurements were performed in order to confirm the optimal sintering temperature. Dilatometric curves, besides sintering, are recording superimposed phase transition and linear expansion. Using a dilatometric curve, three temperatures were determined at which the examined sample shows significant changes. At 1055 °C–1194 °C certain second order phase transition is evident, at 1365 °C–1409 °C intensive nitrogen oxide extrusion, and in duration of 86 min at 877 °C heating ramp thorough isothermal holding at 1410 °C until 158 min cooling schedule at 1331 °C sintering is performed. Vickers hardness values were obtained based on the change in the surface area of the diamond pyramid. The results indicate that the hardness of the Ca1-xGdxMnO3 system (x = 0.05; 0.1; 0.15; 0.2) is not conditioned by the amount of doped gadolinium.
PB  - University of Belgrade : Institute for Multidisciplinary Research
C3  - 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
T1  - Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2)
SP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11505
ER  - 

@conference{
author = "Labus, Nebojša and Gulicovski, Jelena and Čebela, Maria and Rosić, Milena",
year = "2022",
abstract = "Nanocrystalline powders of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, and 0.2) have been synthesized by the modified glycine nitrate procedure and pressed into pellets that served as green bodies for a systematic investigation on their structural and microstructural properties [1]. Dilatometric measurements were performed in order to confirm the optimal sintering temperature. Dilatometric curves, besides sintering, are recording superimposed phase transition and linear expansion. Using a dilatometric curve, three temperatures were determined at which the examined sample shows significant changes. At 1055 °C–1194 °C certain second order phase transition is evident, at 1365 °C–1409 °C intensive nitrogen oxide extrusion, and in duration of 86 min at 877 °C heating ramp thorough isothermal holding at 1410 °C until 158 min cooling schedule at 1331 °C sintering is performed. Vickers hardness values were obtained based on the change in the surface area of the diamond pyramid. The results indicate that the hardness of the Ca1-xGdxMnO3 system (x = 0.05; 0.1; 0.15; 0.2) is not conditioned by the amount of doped gadolinium.",
publisher = "University of Belgrade : Institute for Multidisciplinary Research",
journal = "6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade",
title = "Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2)",
pages = "68",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11505"
}

Labus, N., Gulicovski, J., Čebela, M.,& Rosić, M.. (2022). Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2). in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
University of Belgrade : Institute for Multidisciplinary Research., 68.
https://hdl.handle.net/21.15107/rcub_vinar_11505

Labus N, Gulicovski J, Čebela M, Rosić M. Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2). in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade. 2022;:68.
https://hdl.handle.net/21.15107/rcub_vinar_11505 .

Labus, Nebojša, Gulicovski, Jelena, Čebela, Maria, Rosić, Milena, "Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2)" in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade (2022):68,
https://hdl.handle.net/21.15107/rcub_vinar_11505 .

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Jordanov, Dragana
AU  - Labus, Nebojša
AU  - Vasić Jovev, Marija
AU  - Ljupković, Radomir
AU  - Zarubica, Aleksandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11509
AB  - Nanosized CoMoO4 solid solution was successfully synthesized at room temperature using simple and fast Self Propagating Room Temperature procedure (SPRT). The structural, textural, morphological and surface characteristics of the nanosized CoMoO4 were examined in detail by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, Field emission scanning electron microscopy (FESEM), and nitrogen sorption method. X-ray powder diffraction (XRPD) reflected the presence of two different phases that are in the same space group. The α-CoMoO4 and the β-CoMoO4 modification crystallizes in the monoclinic space group C2/m, No.12, but the β-phase clearly distinct from the α-phase due to the tetrahedral coordination of the Mo6+ ions. Adsorption tests were studied over CoMoO4 nanopowders under different experimental conditions (material dosage, initial concentration of pollutant textile dye, etc). The obtained results showed acceptable sorption characteristics of the material.
PB  - University of Belgrade : Institute for Multidisciplinary Research
C3  - 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
T1  - Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method
SP  - 55
EP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11509
ER  - 

@conference{
author = "Rosić, Milena and Čebela, Maria and Jordanov, Dragana and Labus, Nebojša and Vasić Jovev, Marija and Ljupković, Radomir and Zarubica, Aleksandra",
year = "2022",
abstract = "Nanosized CoMoO4 solid solution was successfully synthesized at room temperature using simple and fast Self Propagating Room Temperature procedure (SPRT). The structural, textural, morphological and surface characteristics of the nanosized CoMoO4 were examined in detail by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, Field emission scanning electron microscopy (FESEM), and nitrogen sorption method. X-ray powder diffraction (XRPD) reflected the presence of two different phases that are in the same space group. The α-CoMoO4 and the β-CoMoO4 modification crystallizes in the monoclinic space group C2/m, No.12, but the β-phase clearly distinct from the α-phase due to the tetrahedral coordination of the Mo6+ ions. Adsorption tests were studied over CoMoO4 nanopowders under different experimental conditions (material dosage, initial concentration of pollutant textile dye, etc). The obtained results showed acceptable sorption characteristics of the material.",
publisher = "University of Belgrade : Institute for Multidisciplinary Research",
journal = "6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade",
title = "Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method",
pages = "55-56",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11509"
}

Rosić, M., Čebela, M., Jordanov, D., Labus, N., Vasić Jovev, M., Ljupković, R.,& Zarubica, A.. (2022). Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method. in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
University of Belgrade : Institute for Multidisciplinary Research., 55-56.
https://hdl.handle.net/21.15107/rcub_vinar_11509

Rosić M, Čebela M, Jordanov D, Labus N, Vasić Jovev M, Ljupković R, Zarubica A. Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method. in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade. 2022;:55-56.
https://hdl.handle.net/21.15107/rcub_vinar_11509 .

Rosić, Milena, Čebela, Maria, Jordanov, Dragana, Labus, Nebojša, Vasić Jovev, Marija, Ljupković, Radomir, Zarubica, Aleksandra, "Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method" in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade (2022):55-56,
https://hdl.handle.net/21.15107/rcub_vinar_11509 .

TY  - CONF
AU  - Rosić, Milena
AU  - Milivojević, Dušan
AU  - Labus, Nebojša
AU  - Čebela, Maria
AU  - Dodevski, Vladimir
AU  - Jordanov, Dragana
AU  - Stojmenović, Marija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10812
AB  - Experimental and theoretical methods have been used to investigate the octahedral tilting and related effects of Ca 1-x Gdx MnO3 (x = 0.05; 0.1; 0.15; 0.2) compound. Both methods have shown that orthorhombic-perovskite structure (space group Pnma) is the most stable form and according to Glazer's classification belongs to a-b+a- tilt system. Bond valence calculations (BVC) have shown ten additional perovskite-related modifications of the equilibrium Ca 1-x Gdx MnO3 structure, and their stability has been investigated as function of Gd doping. We have further studied the influence of gadolinium amount on Mn-О bond angles and distances, tilting of MnO6 octahedra around all three axes and deformation due to the presence of Jahn-Teller distortion around Mn3+ cation, and calculated the amount of Mn 3+ in the system. BVCapproach is a simple, fast and efficient way of calculating the amount of Mn 4+ and Mn 3+ in the doped perovskite compound, which, to the best of our knowledge, has not been done before. The infrared reflection spectra of Ca 1-x Gdx MnO3 samples confirmed XRD results that Ca 1-x Gdx MnO3 nanopowders are of Pnma-1 structure and that the tilting of octahedra are increased with Gddoping. The EPR (electron paramagnetic resonance) spectra are in accordance with the assumption that EPR linewidth is Mn-O-Mn angle dependent. The studied samples showed that small octahedra tilting in these samples brought only a small change of the EPR linewidth.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)
SP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10812
ER  - 

@conference{
author = "Rosić, Milena and Milivojević, Dušan and Labus, Nebojša and Čebela, Maria and Dodevski, Vladimir and Jordanov, Dragana and Stojmenović, Marija",
year = "2021",
abstract = "Experimental and theoretical methods have been used to investigate the octahedral tilting and related effects of Ca 1-x Gdx MnO3 (x = 0.05; 0.1; 0.15; 0.2) compound. Both methods have shown that orthorhombic-perovskite structure (space group Pnma) is the most stable form and according to Glazer's classification belongs to a-b+a- tilt system. Bond valence calculations (BVC) have shown ten additional perovskite-related modifications of the equilibrium Ca 1-x Gdx MnO3 structure, and their stability has been investigated as function of Gd doping. We have further studied the influence of gadolinium amount on Mn-О bond angles and distances, tilting of MnO6 octahedra around all three axes and deformation due to the presence of Jahn-Teller distortion around Mn3+ cation, and calculated the amount of Mn 3+ in the system. BVCapproach is a simple, fast and efficient way of calculating the amount of Mn 4+ and Mn 3+ in the doped perovskite compound, which, to the best of our knowledge, has not been done before. The infrared reflection spectra of Ca 1-x Gdx MnO3 samples confirmed XRD results that Ca 1-x Gdx MnO3 nanopowders are of Pnma-1 structure and that the tilting of octahedra are increased with Gddoping. The EPR (electron paramagnetic resonance) spectra are in accordance with the assumption that EPR linewidth is Mn-O-Mn angle dependent. The studied samples showed that small octahedra tilting in these samples brought only a small change of the EPR linewidth.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)",
pages = "70",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10812"
}

Rosić, M., Milivojević, D., Labus, N., Čebela, M., Dodevski, V., Jordanov, D.,& Stojmenović, M.. (2021). Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 70.
https://hdl.handle.net/21.15107/rcub_vinar_10812

Rosić M, Milivojević D, Labus N, Čebela M, Dodevski V, Jordanov D, Stojmenović M. Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:70.
https://hdl.handle.net/21.15107/rcub_vinar_10812 .

Rosić, Milena, Milivojević, Dušan, Labus, Nebojša, Čebela, Maria, Dodevski, Vladimir, Jordanov, Dragana, Stojmenović, Marija, "Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):70,
https://hdl.handle.net/21.15107/rcub_vinar_10812 .

TY  - CONF
AU  - Rosić, Milena
AU  - Labus, Nebojša
AU  - Čebela, Maria
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10782
AB  - Nanocrystallinemanganites Ca 1-x GdxMnO3 (x=0.05, 0.1, 0.15, 0.2) were synthesized by a modified glycine-nitrate procedure. The subsequent studies were focused on the structural, microstructural and magnetic changes of the starting materials induced by calcination and sintering.Thermal treatments of the green bodies were carried out by conventional sintering method.Phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by Differential thermal analysis (DTA), X-ray diffraction (XRD),Induction coupled Plasma Atomic Emission (ICPES), Scanning electron Microscopy with Energy Dispersive Spectroscopy SEM/EDS and magnetic measurements on Superconducting Quantum Interference Device (Squid).DTA revealed phase transition at ≈918ºC.Chemical analysis has been done by ICPES and EDSwhich confirmed that nominal composition has been attained for all samples.XRD data were analysed by Rietveld refinement which showed that orthorhombic perovskite structure, S.G. Pnma(62), persisted with the change of Gd content, while unit cell parameters depended on the composition. Magnetic measurements show that electron doping by Gd 3+ ions substantially changes CaMnO3 antiferromagnetic behavior. After introduction of Gd3+ ions, significant ferromagnetic component appears due to an emergence of double exchange interaction between Mn3+ -Mn4+ ions. This resulted in appearance of a low temperature plateau in field cooled magnetization diagram as well as in hysteresis loop with the relatively high coercivity up to 2300 Oe.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)
SP  - 39
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10782
ER  - 

@conference{
author = "Rosić, Milena and Labus, Nebojša and Čebela, Maria",
year = "2021",
abstract = "Nanocrystallinemanganites Ca 1-x GdxMnO3 (x=0.05, 0.1, 0.15, 0.2) were synthesized by a modified glycine-nitrate procedure. The subsequent studies were focused on the structural, microstructural and magnetic changes of the starting materials induced by calcination and sintering.Thermal treatments of the green bodies were carried out by conventional sintering method.Phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by Differential thermal analysis (DTA), X-ray diffraction (XRD),Induction coupled Plasma Atomic Emission (ICPES), Scanning electron Microscopy with Energy Dispersive Spectroscopy SEM/EDS and magnetic measurements on Superconducting Quantum Interference Device (Squid).DTA revealed phase transition at ≈918ºC.Chemical analysis has been done by ICPES and EDSwhich confirmed that nominal composition has been attained for all samples.XRD data were analysed by Rietveld refinement which showed that orthorhombic perovskite structure, S.G. Pnma(62), persisted with the change of Gd content, while unit cell parameters depended on the composition. Magnetic measurements show that electron doping by Gd 3+ ions substantially changes CaMnO3 antiferromagnetic behavior. After introduction of Gd3+ ions, significant ferromagnetic component appears due to an emergence of double exchange interaction between Mn3+ -Mn4+ ions. This resulted in appearance of a low temperature plateau in field cooled magnetization diagram as well as in hysteresis loop with the relatively high coercivity up to 2300 Oe.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)",
pages = "39-40",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10782"
}

Rosić, M., Labus, N.,& Čebela, M.. (2021). Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 39-40.
https://hdl.handle.net/21.15107/rcub_vinar_10782

Rosić M, Labus N, Čebela M. Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:39-40.
https://hdl.handle.net/21.15107/rcub_vinar_10782 .

Rosić, Milena, Labus, Nebojša, Čebela, Maria, "Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):39-40,
https://hdl.handle.net/21.15107/rcub_vinar_10782 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Marković, Smilja
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10784
AB  - Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering
SP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_dais_11894
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Marković, Smilja and Nikolić, Maria Vesna",
year = "2021",
abstract = "Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering",
pages = "41",
url = "https://hdl.handle.net/21.15107/rcub_dais_11894"
}

Labus, N., Rosić, M., Marković, S.,& Nikolić, M. V.. (2021). Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 41.
https://hdl.handle.net/21.15107/rcub_dais_11894

Labus N, Rosić M, Marković S, Nikolić MV. Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:41.
https://hdl.handle.net/21.15107/rcub_dais_11894 .

Labus, Nebojša, Rosić, Milena, Marković, Smilja, Nikolić, Maria Vesna, "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):41,
https://hdl.handle.net/21.15107/rcub_dais_11894 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Jordanov, Dragana
AU  - Dodevski, Dragan
AU  - Radović, Ivana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11493
AB  - In this study we have combined two research methods: structure prediction of ZnTiO3 using computational SPuDS software, and the characterization of binary oxides obtained from ZnO TiO2 system. Pure nanosized ZnTiO3 (99.5%), was compacted in cylindrical shape specimens by uniaxial double sided compaction and then sintered in air atmosphere in a dilatometric device [1,2]. One compact was sintered up to 915 °C to retain metastabile ZnTiO3 and held 5 minutes on that temperature, and another one at the same conditions, but now up to 970 °C to induce phase transition and to obtain stabile Zn2TiO4 and TiO2 according to phase diagram [2]. Reheated samples obtained at different characteristic temperatures in air were analyzed by X-ray diffraction (XRD). The infrared attenuated total reflectivity measurements confirmed XRD results. In order to estimate theoretical stability of these perovskite structure, Goldschmidt tolerance factor Gt and global instability index GII were calculated. Furthermore, the Ti valence states were determined by bond valence calculations (BVC). Also, we have investigated the formation of new phases (Zn2Ti3O8, TiO2 and Zn2TiO4) originating from ZnTiO3 with temperature change, as well as the relation between the crystal structures which have been predicted and the structure of the phases we have experimentally observed.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade
T1  - Theoretical and experimental study of polycrystalline phases obtained by the nanometric ZnTiO3 powder sintering
SP  - 110
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11493
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Čebela, Maria and Jordanov, Dragana and Dodevski, Dragan and Radović, Ivana",
year = "2019",
abstract = "In this study we have combined two research methods: structure prediction of ZnTiO3 using computational SPuDS software, and the characterization of binary oxides obtained from ZnO TiO2 system. Pure nanosized ZnTiO3 (99.5%), was compacted in cylindrical shape specimens by uniaxial double sided compaction and then sintered in air atmosphere in a dilatometric device [1,2]. One compact was sintered up to 915 °C to retain metastabile ZnTiO3 and held 5 minutes on that temperature, and another one at the same conditions, but now up to 970 °C to induce phase transition and to obtain stabile Zn2TiO4 and TiO2 according to phase diagram [2]. Reheated samples obtained at different characteristic temperatures in air were analyzed by X-ray diffraction (XRD). The infrared attenuated total reflectivity measurements confirmed XRD results. In order to estimate theoretical stability of these perovskite structure, Goldschmidt tolerance factor Gt and global instability index GII were calculated. Furthermore, the Ti valence states were determined by bond valence calculations (BVC). Also, we have investigated the formation of new phases (Zn2Ti3O8, TiO2 and Zn2TiO4) originating from ZnTiO3 with temperature change, as well as the relation between the crystal structures which have been predicted and the structure of the phases we have experimentally observed.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade",
title = "Theoretical and experimental study of polycrystalline phases obtained by the nanometric ZnTiO3 powder sintering",
pages = "110",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11493"
}

Labus, N., Rosić, M., Čebela, M., Jordanov, D., Dodevski, D.,& Radović, I.. (2019). Theoretical and experimental study of polycrystalline phases obtained by the nanometric ZnTiO3 powder sintering. in 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade
Belgrade : Institute for Multidisciplinary Research., 110.
https://hdl.handle.net/21.15107/rcub_vinar_11493

Labus N, Rosić M, Čebela M, Jordanov D, Dodevski D, Radović I. Theoretical and experimental study of polycrystalline phases obtained by the nanometric ZnTiO3 powder sintering. in 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade. 2019;:110.
https://hdl.handle.net/21.15107/rcub_vinar_11493 .

Labus, Nebojša, Rosić, Milena, Čebela, Maria, Jordanov, Dragana, Dodevski, Dragan, Radović, Ivana, "Theoretical and experimental study of polycrystalline phases obtained by the nanometric ZnTiO3 powder sintering" in 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade (2019):110,
https://hdl.handle.net/21.15107/rcub_vinar_11493 .

TY  - CONF
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Balaz, Nelu
AU  - Milutinov, Miodrag
AU  - Vasiljević, Zorka
AU  - Labus, Nebojša
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/15430
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7557
AB  - Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.
PB  - Belgrade : Institute for Multidisciplinary Research of the University of Belgrade
C3  - Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
T1  - Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite
SP  - 102
EP  - 102
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7557
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Luković, Miloljub D. and Nikolić, Maria Vesna and Balaz, Nelu and Milutinov, Miodrag and Vasiljević, Zorka and Labus, Nebojša and Aleksić, Obrad S.",
year = "2017",
abstract = "Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.",
publisher = "Belgrade : Institute for Multidisciplinary Research of the University of Belgrade",
journal = "Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia",
title = "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite",
pages = "102-102",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7557"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Luković, M. D., Nikolić, M. V., Balaz, N., Milutinov, M., Vasiljević, Z., Labus, N.,& Aleksić, O. S.. (2017). Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research of the University of Belgrade., 102-102.
https://hdl.handle.net/21.15107/rcub_vinar_7557

Matović B, Branković Z, Bučevac D, Srdić V, Luković MD, Nikolić MV, Balaz N, Milutinov M, Vasiljević Z, Labus N, Aleksić OS. Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia. 2017;:102-102.
https://hdl.handle.net/21.15107/rcub_vinar_7557 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Luković, Miloljub D., Nikolić, Maria Vesna, Balaz, Nelu, Milutinov, Miodrag, Vasiljević, Zorka, Labus, Nebojša, Aleksić, Obrad S., "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite" in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia (2017):102-102,
https://hdl.handle.net/21.15107/rcub_vinar_7557 .

TY  - CONF
AU  - Vasiljević, Zorka
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad S.
AU  - Labus, Nebojša
AU  - Luković, Miloljub D.
AU  - Marković, Smilja
AU  - Nikolić, Pantelija
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7566
AB  - Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser particle size analyzer and correlated with XRD and SEM analysis. The band gap was determined using UV/Vis spectroscopy. Green samples were sintered in a dilatometer and at 1000oC for 2h in air. Thermal diffusivity was determined from photoacoustic measurements. Electrical conductivity measurements were performed. The aim was to obtain pseudobrookite with properties suitable for polymer paste for thick films to be applied as gas sensors.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Structural and Electronic Properties of Pseudobrookite
SP  - 98
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7566
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Vasiljević, Zorka and Nikolić, Maria Vesna and Aleksić, Obrad S. and Labus, Nebojša and Luković, Miloljub D. and Marković, Smilja and Nikolić, Pantelija",
year = "2015",
abstract = "Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser particle size analyzer and correlated with XRD and SEM analysis. The band gap was determined using UV/Vis spectroscopy. Green samples were sintered in a dilatometer and at 1000oC for 2h in air. Thermal diffusivity was determined from photoacoustic measurements. Electrical conductivity measurements were performed. The aim was to obtain pseudobrookite with properties suitable for polymer paste for thick films to be applied as gas sensors.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Structural and Electronic Properties of Pseudobrookite",
pages = "98-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7566"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Vasiljević, Z., Nikolić, M. V., Aleksić, O. S., Labus, N., Luković, M. D., Marković, S.,& Nikolić, P.. (2015). Structural and Electronic Properties of Pseudobrookite. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 98-99.
https://hdl.handle.net/21.15107/rcub_vinar_7566

Matović B, Branković Z, Bučevac D, Srdić V, Vasiljević Z, Nikolić MV, Aleksić OS, Labus N, Luković MD, Marković S, Nikolić P. Structural and Electronic Properties of Pseudobrookite. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:98-99.
https://hdl.handle.net/21.15107/rcub_vinar_7566 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Vasiljević, Zorka, Nikolić, Maria Vesna, Aleksić, Obrad S., Labus, Nebojša, Luković, Miloljub D., Marković, Smilja, Nikolić, Pantelija, "Structural and Electronic Properties of Pseudobrookite" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):98-99,
https://hdl.handle.net/21.15107/rcub_vinar_7566 .

TY  - CONF
AU  - Vasiljević, Zorka
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/15426
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7567
AB  - Metastabile nanopowder ZnTiO3 pressed into cylindrical compacts at 200 MPa was submitted to conventional heating with isothermal holding at 931oC for 10 minutes, 25 minutes and 40 minutes. Same compacts were heated with two-step sintering schedule with maximal 912oC and isothermal holding at 896oC, for approximately the same holding times as with isothermal. Shrinkage during heating was monitored with dilatometric device, while microstructure was determined with atomic force microscopy. XRD patterns were collected for the most prominent samples. Sintered specimens microstructure showed differences introduced during last sintering stage by two heating schedules.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Two step sintering of the ZnTiO3 nanopowder
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7567
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Vasiljević, Zorka and Vasiljević-Radović, Dana and Nikolić, Maria Vesna and Labus, Nebojša",
year = "2015",
abstract = "Metastabile nanopowder ZnTiO3 pressed into cylindrical compacts at 200 MPa was submitted to conventional heating with isothermal holding at 931oC for 10 minutes, 25 minutes and 40 minutes. Same compacts were heated with two-step sintering schedule with maximal 912oC and isothermal holding at 896oC, for approximately the same holding times as with isothermal. Shrinkage during heating was monitored with dilatometric device, while microstructure was determined with atomic force microscopy. XRD patterns were collected for the most prominent samples. Sintered specimens microstructure showed differences introduced during last sintering stage by two heating schedules.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Two step sintering of the ZnTiO3 nanopowder",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7567"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Vasiljević, Z., Vasiljević-Radović, D., Nikolić, M. V.,& Labus, N.. (2015). Two step sintering of the ZnTiO3 nanopowder. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 101-101.
https://hdl.handle.net/21.15107/rcub_vinar_7567

Matović B, Branković Z, Bučevac D, Srdić V, Vasiljević Z, Vasiljević-Radović D, Nikolić MV, Labus N. Two step sintering of the ZnTiO3 nanopowder. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:101-101.
https://hdl.handle.net/21.15107/rcub_vinar_7567 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Vasiljević, Zorka, Vasiljević-Radović, Dana, Nikolić, Maria Vesna, Labus, Nebojša, "Two step sintering of the ZnTiO3 nanopowder" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):101-101,
https://hdl.handle.net/21.15107/rcub_vinar_7567 .

TY  - CONF
AU  - Živojinović, Jelena
AU  - Kosanović, Darko
AU  - Obradović, Nina
AU  - Peleš, Adriana
AU  - Labus, Nebojša
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Mitrić, Miodrag
AU  - Ristić, Momčilo M.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/414
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7426
AB  - Strontium-titanate powder was mechanically activated in a planetary ball mill for 0, 5, 10, 30, 60, 90 and 120 minutes. Non-isothermal sintering of non-activated and activated SrTiO3 powder samples in the temperature interval from 50 to 1300 0C with three different heating rates (10, 15 and 20 0C/min) was investigated on a dilatometer. X-ray powder diffraction and scanning electron microscopy (SEM) were used to determine the phase composition, lattice microstrains and microstructure morphology of the samples. XRD results showed the presence of new phases: SrCO3 (strontuim-carbonate) and TiO2 (anatase) after 30 minutes of  mechanical activation.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
T1  - Dilatometric Analysis of Mechanically Activated SrTiO3 Powder
SP  - 38
EP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7426
ER  - 

@conference{
author = "Živojinović, Jelena and Kosanović, Darko and Obradović, Nina and Peleš, Adriana and Labus, Nebojša and Filipović, Suzana and Pavlović, Vladimir B. and Mitrić, Miodrag and Ristić, Momčilo M.",
year = "2013",
abstract = "Strontium-titanate powder was mechanically activated in a planetary ball mill for 0, 5, 10, 30, 60, 90 and 120 minutes. Non-isothermal sintering of non-activated and activated SrTiO3 powder samples in the temperature interval from 50 to 1300 0C with three different heating rates (10, 15 and 20 0C/min) was investigated on a dilatometer. X-ray powder diffraction and scanning electron microscopy (SEM) were used to determine the phase composition, lattice microstrains and microstructure morphology of the samples. XRD results showed the presence of new phases: SrCO3 (strontuim-carbonate) and TiO2 (anatase) after 30 minutes of  mechanical activation.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade",
title = "Dilatometric Analysis of Mechanically Activated SrTiO3 Powder",
pages = "38-38",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7426"
}

Živojinović, J., Kosanović, D., Obradović, N., Peleš, A., Labus, N., Filipović, S., Pavlović, V. B., Mitrić, M.,& Ristić, M. M.. (2013). Dilatometric Analysis of Mechanically Activated SrTiO3 Powder. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
Belgrade : Serbian Ceramic Society., 38-38.
https://hdl.handle.net/21.15107/rcub_vinar_7426

Živojinović J, Kosanović D, Obradović N, Peleš A, Labus N, Filipović S, Pavlović VB, Mitrić M, Ristić MM. Dilatometric Analysis of Mechanically Activated SrTiO3 Powder. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade. 2013;:38-38.
https://hdl.handle.net/21.15107/rcub_vinar_7426 .

Živojinović, Jelena, Kosanović, Darko, Obradović, Nina, Peleš, Adriana, Labus, Nebojša, Filipović, Suzana, Pavlović, Vladimir B., Mitrić, Miodrag, Ristić, Momčilo M., "Dilatometric Analysis of Mechanically Activated SrTiO3 Powder" in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade (2013):38-38,
https://hdl.handle.net/21.15107/rcub_vinar_7426 .

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Labus, Nebojša
AU  - Peleš, Adriana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/416
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7427
AB  - Mechanical activation is widely used and relatively inexpensive procedure for sintering process sample preparation. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very actual hightemperature ceramic material, due to its characteristics. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6t/cm2 (49 MPa - 588 MPa). Sintering process was performed at 1350oC for 4h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered sample. Non-isothermal sintering up to 1400oC, with a constant heating rate, was investigated by thermal shrinkage change with dilatometer. In this paper we research green bodies and sintered samples compaction pressure influence electrical properties.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
T1  - Density and electrical properties of cordierite based ceramics as function of compaction pressure
SP  - 39
EP  - 39
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7427
ER  - 

@conference{
author = "Obradović, Nina and Đorđević, Nataša and Labus, Nebojša and Peleš, Adriana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2013",
abstract = "Mechanical activation is widely used and relatively inexpensive procedure for sintering process sample preparation. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very actual hightemperature ceramic material, due to its characteristics. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6t/cm2 (49 MPa - 588 MPa). Sintering process was performed at 1350oC for 4h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered sample. Non-isothermal sintering up to 1400oC, with a constant heating rate, was investigated by thermal shrinkage change with dilatometer. In this paper we research green bodies and sintered samples compaction pressure influence electrical properties.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade",
title = "Density and electrical properties of cordierite based ceramics as function of compaction pressure",
pages = "39-39",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7427"
}

Obradović, N., Đorđević, N., Labus, N., Peleš, A., Mitrić, M.,& Pavlović, V. B.. (2013). Density and electrical properties of cordierite based ceramics as function of compaction pressure. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
Belgrade : Serbian Ceramic Society., 39-39.
https://hdl.handle.net/21.15107/rcub_vinar_7427

Obradović N, Đorđević N, Labus N, Peleš A, Mitrić M, Pavlović VB. Density and electrical properties of cordierite based ceramics as function of compaction pressure. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade. 2013;:39-39.
https://hdl.handle.net/21.15107/rcub_vinar_7427 .

Obradović, Nina, Đorđević, Nataša, Labus, Nebojša, Peleš, Adriana, Mitrić, Miodrag, Pavlović, Vladimir B., "Density and electrical properties of cordierite based ceramics as function of compaction pressure" in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade (2013):39-39,
https://hdl.handle.net/21.15107/rcub_vinar_7427 .

TY  - CONF
AU  - Obradović, Nina
AU  - Labus, Nebojša
AU  - Srećković, T.
AU  - Živković, Ljiljana
AU  - Ristić, Momčilo M.
PY  - 2004
UR  - http://dais.sanu.ac.rs/123456789/336
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7406
AB  - Poster presented at the The Sixth Yugoslav Materials Research Society Conference - YUCOMAT 2004, Herceg Novi, Crna Gora, September 13-17, 2004.
T1  - Dilatometer Investigations of Reactive Sintering of Zinc Titanate Ceramics
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7406
ER  - 

@conference{
author = "Obradović, Nina and Labus, Nebojša and Srećković, T. and Živković, Ljiljana and Ristić, Momčilo M.",
year = "2004",
abstract = "Poster presented at the The Sixth Yugoslav Materials Research Society Conference - YUCOMAT 2004, Herceg Novi, Crna Gora, September 13-17, 2004.",
title = "Dilatometer Investigations of Reactive Sintering of Zinc Titanate Ceramics",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7406"
}

Obradović, N., Labus, N., Srećković, T., Živković, L.,& Ristić, M. M.. (2004). Dilatometer Investigations of Reactive Sintering of Zinc Titanate Ceramics. .
https://hdl.handle.net/21.15107/rcub_vinar_7406

Obradović N, Labus N, Srećković T, Živković L, Ristić MM. Dilatometer Investigations of Reactive Sintering of Zinc Titanate Ceramics. 2004;.
https://hdl.handle.net/21.15107/rcub_vinar_7406 .

Obradović, Nina, Labus, Nebojša, Srećković, T., Živković, Ljiljana, Ristić, Momčilo M., "Dilatometer Investigations of Reactive Sintering of Zinc Titanate Ceramics" (2004),
https://hdl.handle.net/21.15107/rcub_vinar_7406 .