TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z.
AU  - Luković, Miloljub D.
AU  - Pavlović, Vera P.
AU  - Vujancević, Jelena
AU  - Radovanović, Milan
AU  - Krstić, Jugoslav B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4705
AB  - Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (alpha-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 degrees C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz-1 MHz with humidity was analyzed at room temperature (25 degrees C) and 50 degrees C in the relative humidity range 30-90% and 40-90%, respectively. At 42 Hz, and room temperature the impedance reduced similar to 28 times, while at 50 degrees C it reduced similar to 147 times in the relative humidity range 40-90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 degrees C and 2.64% at 50 degrees C) showing that this is a promising material for application in humidity sensing.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators B-Chemical
T1  - Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films
EP  - 664
SP  - 654
VL  - 277
DO  - 10.1016/j.snb.2018.09.063
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Z. and Luković, Miloljub D. and Pavlović, Vera P. and Vujancević, Jelena and Radovanović, Milan and Krstić, Jugoslav B. and Vlahović, Branislav and Pavlović, Vladimir",
year = "2018",
abstract = "Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (alpha-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 degrees C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz-1 MHz with humidity was analyzed at room temperature (25 degrees C) and 50 degrees C in the relative humidity range 30-90% and 40-90%, respectively. At 42 Hz, and room temperature the impedance reduced similar to 28 times, while at 50 degrees C it reduced similar to 147 times in the relative humidity range 40-90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 degrees C and 2.64% at 50 degrees C) showing that this is a promising material for application in humidity sensing.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators B-Chemical",
title = "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films",
pages = "664-654",
volume = "277",
doi = "10.1016/j.snb.2018.09.063"
}

Nikolić, M. V., Vasiljević, Z. Z., Luković, M. D., Pavlović, V. P., Vujancević, J., Radovanović, M., Krstić, J. B., Vlahović, B.,& Pavlović, V.. (2018). Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B-Chemical
Elsevier Science Sa, Lausanne., 277, 654-664.
https://doi.org/10.1016/j.snb.2018.09.063

Nikolić MV, Vasiljević ZZ, Luković MD, Pavlović VP, Vujancević J, Radovanović M, Krstić JB, Vlahović B, Pavlović V. Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B-Chemical. 2018;277:654-664.
doi:10.1016/j.snb.2018.09.063 .

Nikolić, Maria Vesna, Vasiljević, Zorka Z., Luković, Miloljub D., Pavlović, Vera P., Vujancević, Jelena, Radovanović, Milan, Krstić, Jugoslav B., Vlahović, Branislav, Pavlović, Vladimir, "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films" in Sensors and Actuators B-Chemical, 277 (2018):654-664,
https://doi.org/10.1016/j.snb.2018.09.063 . .

TY  - JOUR
AU  - Nikolić, M.V.
AU  - Sekulić, D.L.
AU  - Vasiljević, Zorka
AU  - Luković, M.D.
AU  - Pavlović, Vladimir
AU  - Aleksić, O.S.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4367
AB  - In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz-1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1-PSB11 and 1:1.5-PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher's power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures
EP  - 4806
IS  - 6
SP  - 4796
VL  - 28
DO  - 10.1007/s10854-016-6125-6
ER  - 

@article{
author = "Nikolić, M.V. and Sekulić, D.L. and Vasiljević, Zorka and Luković, M.D. and Pavlović, Vladimir and Aleksić, O.S.",
year = "2017",
abstract = "In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz-1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1-PSB11 and 1:1.5-PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher's power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures",
pages = "4806-4796",
number = "6",
volume = "28",
doi = "10.1007/s10854-016-6125-6"
}

Nikolić, M.V., Sekulić, D.L., Vasiljević, Z., Luković, M.D., Pavlović, V.,& Aleksić, O.S.. (2017). Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 28(6), 4796-4806.
https://doi.org/10.1007/s10854-016-6125-6

Nikolić M, Sekulić D, Vasiljević Z, Luković M, Pavlović V, Aleksić O. Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science-Materials in Electronics. 2017;28(6):4796-4806.
doi:10.1007/s10854-016-6125-6 .

Nikolić, M.V., Sekulić, D.L., Vasiljević, Zorka, Luković, M.D., Pavlović, Vladimir, Aleksić, O.S., "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures" in Journal of Materials Science-Materials in Electronics, 28, no. 6 (2017):4796-4806,
https://doi.org/10.1007/s10854-016-6125-6 . .

TY  - JOUR
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka
AU  - Aleksić, Obrad
AU  - Luković, Miloljub
AU  - Marković, Smilja
AU  - Pavlović, Vladimir
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4432
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment
EP  - 467
IS  - 4
SP  - 455
VL  - 49
DO  - 10.2298/SOS1704455L
ER  - 

@article{
author = "Labus, Nebojša and Vasiljević, Zorka and Aleksić, Obrad and Luković, Miloljub and Marković, Smilja and Pavlović, Vladimir and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2017",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment",
pages = "467-455",
number = "4",
volume = "49",
doi = "10.2298/SOS1704455L"
}

Labus, N., Vasiljević, Z., Aleksić, O., Luković, M., Marković, S., Pavlović, V., Mentus, S.,& Nikolić, M. V.. (2017). Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 49(4), 455-467.
https://doi.org/10.2298/SOS1704455L

Labus N, Vasiljević Z, Aleksić O, Luković M, Marković S, Pavlović V, Mentus S, Nikolić MV. Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment. in Science of Sintering. 2017;49(4):455-467.
doi:10.2298/SOS1704455L .

Labus, Nebojša, Vasiljević, Zorka, Aleksić, Obrad, Luković, Miloljub, Marković, Smilja, Pavlović, Vladimir, Mentus, Slavko, Nikolić, Maria Vesna, "Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment" in Science of Sintering, 49, no. 4 (2017):455-467,
https://doi.org/10.2298/SOS1704455L . .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Nikolić, Maria V.
AU  - Pavlović, Vladimir
AU  - Blanusa, Jovan
AU  - Stevanović, Suzana
AU  - Mitić, Vojislav V.
AU  - Scepanović, Maja
AU  - Vlahović, Branislav
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3495
AB  - The structure and lattice dynamics of mechanically activated BaTiO3 was investigated in this study. Phonon behavior and crystal structure stability of the obtained nanocrystalline BaTiO3 were discussed from the view point of crystallite size effects and microstrains induced by mechanical activation. A systematic study of Raman responses indicates that mechanical activation has a distinct influence on BaTiO3 lattice spectra affecting the intensity, width, and position of Raman modes. The measured Raman spectra were deconvoluted and phonon parameters were estimated. It has been established that applied mechanical activation leads to a significant decrease in the mean crystallites size, but nevertheless enables formation of tetragonal nanocrystalline BaTiO3.
PB  - Wiley, Hoboken
T2  - Journal of the American Ceramic Society
T1  - Raman Responses in Mechanically Activated BaTiO3
EP  - 608
IS  - 2
SP  - 601
VL  - 97
DO  - 10.1111/jace.12423
ER  - 

@article{
author = "Pavlović, Vera P. and Nikolić, Maria V. and Pavlović, Vladimir and Blanusa, Jovan and Stevanović, Suzana and Mitić, Vojislav V. and Scepanović, Maja and Vlahović, Branislav",
year = "2014",
abstract = "The structure and lattice dynamics of mechanically activated BaTiO3 was investigated in this study. Phonon behavior and crystal structure stability of the obtained nanocrystalline BaTiO3 were discussed from the view point of crystallite size effects and microstrains induced by mechanical activation. A systematic study of Raman responses indicates that mechanical activation has a distinct influence on BaTiO3 lattice spectra affecting the intensity, width, and position of Raman modes. The measured Raman spectra were deconvoluted and phonon parameters were estimated. It has been established that applied mechanical activation leads to a significant decrease in the mean crystallites size, but nevertheless enables formation of tetragonal nanocrystalline BaTiO3.",
publisher = "Wiley, Hoboken",
journal = "Journal of the American Ceramic Society",
title = "Raman Responses in Mechanically Activated BaTiO3",
pages = "608-601",
number = "2",
volume = "97",
doi = "10.1111/jace.12423"
}

Pavlović, V. P., Nikolić, M. V., Pavlović, V., Blanusa, J., Stevanović, S., Mitić, V. V., Scepanović, M.,& Vlahović, B.. (2014). Raman Responses in Mechanically Activated BaTiO3. in Journal of the American Ceramic Society
Wiley, Hoboken., 97(2), 601-608.
https://doi.org/10.1111/jace.12423

Pavlović VP, Nikolić MV, Pavlović V, Blanusa J, Stevanović S, Mitić VV, Scepanović M, Vlahović B. Raman Responses in Mechanically Activated BaTiO3. in Journal of the American Ceramic Society. 2014;97(2):601-608.
doi:10.1111/jace.12423 .

Pavlović, Vera P., Nikolić, Maria V., Pavlović, Vladimir, Blanusa, Jovan, Stevanović, Suzana, Mitić, Vojislav V., Scepanović, Maja, Vlahović, Branislav, "Raman Responses in Mechanically Activated BaTiO3" in Journal of the American Ceramic Society, 97, no. 2 (2014):601-608,
https://doi.org/10.1111/jace.12423 . .

TY  - JOUR
AU  - Labus, Nebojša
AU  - Krstić, J.
AU  - Marković, S.
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, M.V.
AU  - Pavlović, Vladimir
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3319
AB  - ZnTiO3 nanopowder as a constitutive component in compact production was primarily characterised. Scanning electron micrographs of as received powder were recorded. Mercury porosimetry and nitrogen adsorption were also performed on loose powder. Particle size distribution in a water powder suspension was determined with a laser particle size analyser. Compaction was performed on different pressures in a range from 100 to 400 MPa using the uniaxial double sided compaction technique without binder and lubricant. Micrographs of compacted specimens were obtained using scanning electron microscopy and atomic force microscopy. Pore size distribution was also determined by mercury porosimetry and nitrogen adsorption. Results revealed that with increasing pressure during compaction interagglomerate pores diminish in size until they reach some critical diameter related to the intra-agglomerate pore size.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - ZnTiO3 Ceramic Nanopowder Microstructure Changes During Compaction
EP  - 221
IS  - 2
SP  - 209
VL  - 45
DO  - 10.2298/SOS1302209L
ER  - 

@article{
author = "Labus, Nebojša and Krstić, J. and Marković, S. and Vasiljević-Radović, Dana and Nikolić, M.V. and Pavlović, Vladimir",
year = "2013",
abstract = "ZnTiO3 nanopowder as a constitutive component in compact production was primarily characterised. Scanning electron micrographs of as received powder were recorded. Mercury porosimetry and nitrogen adsorption were also performed on loose powder. Particle size distribution in a water powder suspension was determined with a laser particle size analyser. Compaction was performed on different pressures in a range from 100 to 400 MPa using the uniaxial double sided compaction technique without binder and lubricant. Micrographs of compacted specimens were obtained using scanning electron microscopy and atomic force microscopy. Pore size distribution was also determined by mercury porosimetry and nitrogen adsorption. Results revealed that with increasing pressure during compaction interagglomerate pores diminish in size until they reach some critical diameter related to the intra-agglomerate pore size.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "ZnTiO3 Ceramic Nanopowder Microstructure Changes During Compaction",
pages = "221-209",
number = "2",
volume = "45",
doi = "10.2298/SOS1302209L"
}

Labus, N., Krstić, J., Marković, S., Vasiljević-Radović, D., Nikolić, M.V.,& Pavlović, V.. (2013). ZnTiO3 Ceramic Nanopowder Microstructure Changes During Compaction. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 45(2), 209-221.
https://doi.org/10.2298/SOS1302209L

Labus N, Krstić J, Marković S, Vasiljević-Radović D, Nikolić M, Pavlović V. ZnTiO3 Ceramic Nanopowder Microstructure Changes During Compaction. in Science of Sintering. 2013;45(2):209-221.
doi:10.2298/SOS1302209L .

Labus, Nebojša, Krstić, J., Marković, S., Vasiljević-Radović, Dana, Nikolić, M.V., Pavlović, Vladimir, "ZnTiO3 Ceramic Nanopowder Microstructure Changes During Compaction" in Science of Sintering, 45, no. 2 (2013):209-221,
https://doi.org/10.2298/SOS1302209L . .

TY  - JOUR
AU  - Zlatkov, B.S.
AU  - Nikolić, M.V.
AU  - Zeljković, V.
AU  - Obradović, N.
AU  - Pavlović, Vladimir
AU  - Aleksić, O.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2670
AB  - The powder injection moulding (PIM) technology is lately becoming more and more significant due to complex design possibilities and good repeatability. This technology requires optimization of all steps starting with material and binder, injection, debinding and sintering parameters. Sintering is one of the key links in this technology. The powder injection moulding process is specific as during feedstock injection powder particles mixed into the binder do not come into mechanical contact. Shrinkage during sintering of PIM samples is high. In this work we have analyzed and modeled the sintering process of isotropic PIM samples of Sr-hexaferrite. The Master Sintering Curve (MSC) principle has been applied to analyze sintering of two types of PIM Sr-hexaferrite samples with completely removed binder and only the extraction step of the debinding procedure (thermal debinding proceeding simultaneously with sintering). Influence of the heating rate on resulting sample microstructures has also been analyzed. Influence of the sintering time and temperature was analyzed using three different phenomenological equations.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology
EP  - 20
IS  - 1
SP  - 9
VL  - 43
DO  - 10.2298/SOS1101009Z
ER  - 

@article{
author = "Zlatkov, B.S. and Nikolić, M.V. and Zeljković, V. and Obradović, N. and Pavlović, Vladimir and Aleksić, O.",
year = "2011",
abstract = "The powder injection moulding (PIM) technology is lately becoming more and more significant due to complex design possibilities and good repeatability. This technology requires optimization of all steps starting with material and binder, injection, debinding and sintering parameters. Sintering is one of the key links in this technology. The powder injection moulding process is specific as during feedstock injection powder particles mixed into the binder do not come into mechanical contact. Shrinkage during sintering of PIM samples is high. In this work we have analyzed and modeled the sintering process of isotropic PIM samples of Sr-hexaferrite. The Master Sintering Curve (MSC) principle has been applied to analyze sintering of two types of PIM Sr-hexaferrite samples with completely removed binder and only the extraction step of the debinding procedure (thermal debinding proceeding simultaneously with sintering). Influence of the heating rate on resulting sample microstructures has also been analyzed. Influence of the sintering time and temperature was analyzed using three different phenomenological equations.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology",
pages = "20-9",
number = "1",
volume = "43",
doi = "10.2298/SOS1101009Z"
}

Zlatkov, B.S., Nikolić, M.V., Zeljković, V., Obradović, N., Pavlović, V.,& Aleksić, O.. (2011). Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 43(1), 9-20.
https://doi.org/10.2298/SOS1101009Z

Zlatkov B, Nikolić M, Zeljković V, Obradović N, Pavlović V, Aleksić O. Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology. in Science of Sintering. 2011;43(1):9-20.
doi:10.2298/SOS1101009Z .

Zlatkov, B.S., Nikolić, M.V., Zeljković, V., Obradović, N., Pavlović, Vladimir, Aleksić, O., "Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology" in Science of Sintering, 43, no. 1 (2011):9-20,
https://doi.org/10.2298/SOS1101009Z . .

TY  - JOUR
AU  - Slankamenac, M.
AU  - Ivetić, T.
AU  - Nikolić, M.V.
AU  - Ivetić, N.
AU  - Zivanov, M.
AU  - Pavlović, Vladimir
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2399
AB  - Impedance/admittance and dielectric spectroscopy were used to investigate the effect of temperature on the electrical response of liquid-phase sintered Zn2SnO4-SnO2 ceramics. The measurements were performed over a wide frequency range (100 Hz to 10 MHz) at different temperatures. The real and the imaginary part of the complex impedance traced semicircles in the complex plane. The resistance and the capacitance of bulk and grain-boundary regions were determined by modeling the experimental results using several equivalent circuits taking into account bulk deep trap states. Admittance complex diagrams were also determined in order to understand better the conduction mechanisms occurring in the polycrystalline Zn2SnO4-SnO2 system.
PB  - Springer, New York
T2  - Journal of Electronic Materials
T1  - Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics
EP  - 455
IS  - 4
SP  - 447
VL  - 39
DO  - 10.1007/s11664-010-1118-3
ER  - 

@article{
author = "Slankamenac, M. and Ivetić, T. and Nikolić, M.V. and Ivetić, N. and Zivanov, M. and Pavlović, Vladimir",
year = "2010",
abstract = "Impedance/admittance and dielectric spectroscopy were used to investigate the effect of temperature on the electrical response of liquid-phase sintered Zn2SnO4-SnO2 ceramics. The measurements were performed over a wide frequency range (100 Hz to 10 MHz) at different temperatures. The real and the imaginary part of the complex impedance traced semicircles in the complex plane. The resistance and the capacitance of bulk and grain-boundary regions were determined by modeling the experimental results using several equivalent circuits taking into account bulk deep trap states. Admittance complex diagrams were also determined in order to understand better the conduction mechanisms occurring in the polycrystalline Zn2SnO4-SnO2 system.",
publisher = "Springer, New York",
journal = "Journal of Electronic Materials",
title = "Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics",
pages = "455-447",
number = "4",
volume = "39",
doi = "10.1007/s11664-010-1118-3"
}

Slankamenac, M., Ivetić, T., Nikolić, M.V., Ivetić, N., Zivanov, M.,& Pavlović, V.. (2010). Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics. in Journal of Electronic Materials
Springer, New York., 39(4), 447-455.
https://doi.org/10.1007/s11664-010-1118-3

Slankamenac M, Ivetić T, Nikolić M, Ivetić N, Zivanov M, Pavlović V. Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics. in Journal of Electronic Materials. 2010;39(4):447-455.
doi:10.1007/s11664-010-1118-3 .

Slankamenac, M., Ivetić, T., Nikolić, M.V., Ivetić, N., Zivanov, M., Pavlović, Vladimir, "Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics" in Journal of Electronic Materials, 39, no. 4 (2010):447-455,
https://doi.org/10.1007/s11664-010-1118-3 . .

TY  - CONF
AU  - Ivetić, Tamara B.
AU  - Nikolić, Maria Vesna P.
AU  - Pavlović, Vladimir
AU  - Nikolić, Pantelija M.
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1586
AB  - In this paper the changes that occured in differently activated ZnO-SnO(2) and sintered samples were investigated using photoacoustic spectroscopy. ZnO and SnO(2) powders, mixed in the molar ratio 2:1, were mechanically activated in a planetary ball mill for 10-160 min. The mixtures were pressed and isothermally sintered at 1300 degrees C for two hours. X-ray diffraction analysis of the obtained sintered samples was performed in order to investigate changes of the phase composition and confirmed only the presence of a pure zinc stannate (Zn(2)SnO(4)) phase in all the sintered samples as a result of the solid state reaction and reaction sintering between the starting ZnO and SnO(2) powders. The microstructure of the sintered samples was examined by scanning electron microscopy and showed that mechanical activation leads to the formation of a structure with reduced particle size which accelerates spinel formation. Grain growth of the spinel phase slows down the densification process and together with the agglomerates formed during mechanical activation causes the appearance of a porous microstructure. The photoacoustic (PA) phase and amplitude spectra of the sintered samples were recorded as a function of the chopped frequency of the laser beam used (red laser with a power of 25 mW, lambda = 632 nm) in a thermal-transmission detection configuration. PA experimental data were analyzed using the Rosenzweig-Gersho thermal-piston model, which enabled determination of the thermal diffusivity, D(T) (m(2) s(-1)), diffusion coefficient of the minority free carriers D (m(2)s(-1)) and the optical absorption coefficient (m(-1)). The detected differences of the measured thermal-electrical properties of the obtained Zn(2)SnO(4) ceramics indicate changes in the material induced by the different preparation procedure of the starting powders before the sintering process.
PB  - Savez hemijskih inženjera, Beograd
C3  - HEMIJSKA INDUSTRIJA
T1  - Photoacoustic spectroscopy investigation of sintered zinc-tin-oxide ceramics
EP  - 146
IS  - 3
SP  - 142
VL  - 61
DO  - 10.2298/HEMIND0703142I
ER  - 

@conference{
author = "Ivetić, Tamara B. and Nikolić, Maria Vesna P. and Pavlović, Vladimir and Nikolić, Pantelija M. and Ristić, Momčilo M.",
year = "2007",
abstract = "In this paper the changes that occured in differently activated ZnO-SnO(2) and sintered samples were investigated using photoacoustic spectroscopy. ZnO and SnO(2) powders, mixed in the molar ratio 2:1, were mechanically activated in a planetary ball mill for 10-160 min. The mixtures were pressed and isothermally sintered at 1300 degrees C for two hours. X-ray diffraction analysis of the obtained sintered samples was performed in order to investigate changes of the phase composition and confirmed only the presence of a pure zinc stannate (Zn(2)SnO(4)) phase in all the sintered samples as a result of the solid state reaction and reaction sintering between the starting ZnO and SnO(2) powders. The microstructure of the sintered samples was examined by scanning electron microscopy and showed that mechanical activation leads to the formation of a structure with reduced particle size which accelerates spinel formation. Grain growth of the spinel phase slows down the densification process and together with the agglomerates formed during mechanical activation causes the appearance of a porous microstructure. The photoacoustic (PA) phase and amplitude spectra of the sintered samples were recorded as a function of the chopped frequency of the laser beam used (red laser with a power of 25 mW, lambda = 632 nm) in a thermal-transmission detection configuration. PA experimental data were analyzed using the Rosenzweig-Gersho thermal-piston model, which enabled determination of the thermal diffusivity, D(T) (m(2) s(-1)), diffusion coefficient of the minority free carriers D (m(2)s(-1)) and the optical absorption coefficient (m(-1)). The detected differences of the measured thermal-electrical properties of the obtained Zn(2)SnO(4) ceramics indicate changes in the material induced by the different preparation procedure of the starting powders before the sintering process.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "HEMIJSKA INDUSTRIJA",
title = "Photoacoustic spectroscopy investigation of sintered zinc-tin-oxide ceramics",
pages = "146-142",
number = "3",
volume = "61",
doi = "10.2298/HEMIND0703142I"
}

Ivetić, T. B., Nikolić, M. V. P., Pavlović, V., Nikolić, P. M.,& Ristić, M. M.. (2007). Photoacoustic spectroscopy investigation of sintered zinc-tin-oxide ceramics. in HEMIJSKA INDUSTRIJA
Savez hemijskih inženjera, Beograd., 61(3), 142-146.
https://doi.org/10.2298/HEMIND0703142I

Ivetić TB, Nikolić MVP, Pavlović V, Nikolić PM, Ristić MM. Photoacoustic spectroscopy investigation of sintered zinc-tin-oxide ceramics. in HEMIJSKA INDUSTRIJA. 2007;61(3):142-146.
doi:10.2298/HEMIND0703142I .

Ivetić, Tamara B., Nikolić, Maria Vesna P., Pavlović, Vladimir, Nikolić, Pantelija M., Ristić, Momčilo M., "Photoacoustic spectroscopy investigation of sintered zinc-tin-oxide ceramics" in HEMIJSKA INDUSTRIJA, 61, no. 3 (2007):142-146,
https://doi.org/10.2298/HEMIND0703142I . .

TY  - CONF
AU  - Pavlović, Vera P.
AU  - Nikolić, M.V.
AU  - Spasojević, V.
AU  - Blanusa, J.
AU  - Zivković, Lj.
AU  - Stojanović, B.D.
AU  - Pavlović, Vladimir
AU  - Ristić, M.M.
PY  - 2006
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1340
AB  - In this paper the influence of tribophysical activation on non-isothermal sintering of barium titanate has been investigated. BaTiO3 Powders were tribophysically activated in a planetary ball mill for 0, 60 and 120 min., pressed and non-isothermally sintered up to 1380 degrees C. Dilatometric analysis was performed in air in the temperature range from room temperature to 1380 degrees C with heating rates of 10, 20 and 30 degrees C/min. The samples were analyzed by the X-ray powder diffraction method. Investigation of the morphology of microstructure constituents was performed using the scanning electron microsocopy method. With the purpose of optimizing technological parameters the results obtained by microstructure analysis were correlated with the results of quantitative dilatometric analysis.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
C3  - Materials Science Forum
T1  - The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics
EP  - 1570
SP  - 1566
VL  - 514-516
DO  - 10.4028/www.scientific.net/MSF.514-516.1566
ER  - 

@conference{
author = "Pavlović, Vera P. and Nikolić, M.V. and Spasojević, V. and Blanusa, J. and Zivković, Lj. and Stojanović, B.D. and Pavlović, Vladimir and Ristić, M.M.",
year = "2006",
abstract = "In this paper the influence of tribophysical activation on non-isothermal sintering of barium titanate has been investigated. BaTiO3 Powders were tribophysically activated in a planetary ball mill for 0, 60 and 120 min., pressed and non-isothermally sintered up to 1380 degrees C. Dilatometric analysis was performed in air in the temperature range from room temperature to 1380 degrees C with heating rates of 10, 20 and 30 degrees C/min. The samples were analyzed by the X-ray powder diffraction method. Investigation of the morphology of microstructure constituents was performed using the scanning electron microsocopy method. With the purpose of optimizing technological parameters the results obtained by microstructure analysis were correlated with the results of quantitative dilatometric analysis.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Materials Science Forum",
title = "The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics",
pages = "1570-1566",
volume = "514-516",
doi = "10.4028/www.scientific.net/MSF.514-516.1566"
}

Pavlović, V. P., Nikolić, M.V., Spasojević, V., Blanusa, J., Zivković, Lj., Stojanović, B.D., Pavlović, V.,& Ristić, M.M.. (2006). The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics. in Materials Science Forum
Trans Tech Publications Ltd, Durnten-Zurich., 514-516, 1566-1570.
https://doi.org/10.4028/www.scientific.net/MSF.514-516.1566

Pavlović VP, Nikolić M, Spasojević V, Blanusa J, Zivković L, Stojanović B, Pavlović V, Ristić M. The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics. in Materials Science Forum. 2006;514-516:1566-1570.
doi:10.4028/www.scientific.net/MSF.514-516.1566 .

Pavlović, Vera P., Nikolić, M.V., Spasojević, V., Blanusa, J., Zivković, Lj., Stojanović, B.D., Pavlović, Vladimir, Ristić, M.M., "The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics" in Materials Science Forum, 514-516 (2006):1566-1570,
https://doi.org/10.4028/www.scientific.net/MSF.514-516.1566 . .

TY  - CONF
AU  - Pavlović, V. P.
AU  - Nikolić, MV
AU  - Pavlović, Vladimir
AU  - Labus, Nebojša
AU  - Zivković, L
AU  - Stojanović, BD
PY  - 2005
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1001
AB  - Increasing demands on the quality of electronic ceramics requires a well-controlled correlation between particle morphology and processing conditions. Since mechanical activation is one of the methods for modification of physico-chemical properties of dispersed systems, in this study a correlation between the densification rate and microstructure evolution of mechanically activated BaTiO3 has been analyzed. The shrinkage behaviour of mechanically activated samples, sintered under non-isothermal conditions has been analyzed by a sensitive dilatometer. Densification rate as a function of relative density for different activation times has been calculated. Microstructure investigations of sintered samples were carried out, using a scanning electron microscope (SEM). The presented results enable establishing processing parameters that are indispensable for obtaining materials with advanced properties.
PB  - Taylor & Francis Ltd, Abingdon
C3  - Ferroelectrics
T1  - Correlation between densification rate and microstructure evolution of mechanically activated BaTiO3
EP  - 85
SP  - 75
VL  - 319
DO  - 10.1080/00150190590965451
ER  - 

@conference{
author = "Pavlović, V. P. and Nikolić, MV and Pavlović, Vladimir and Labus, Nebojša and Zivković, L and Stojanović, BD",
year = "2005",
abstract = "Increasing demands on the quality of electronic ceramics requires a well-controlled correlation between particle morphology and processing conditions. Since mechanical activation is one of the methods for modification of physico-chemical properties of dispersed systems, in this study a correlation between the densification rate and microstructure evolution of mechanically activated BaTiO3 has been analyzed. The shrinkage behaviour of mechanically activated samples, sintered under non-isothermal conditions has been analyzed by a sensitive dilatometer. Densification rate as a function of relative density for different activation times has been calculated. Microstructure investigations of sintered samples were carried out, using a scanning electron microscope (SEM). The presented results enable establishing processing parameters that are indispensable for obtaining materials with advanced properties.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Ferroelectrics",
title = "Correlation between densification rate and microstructure evolution of mechanically activated BaTiO3",
pages = "85-75",
volume = "319",
doi = "10.1080/00150190590965451"
}

Pavlović, V. P., Nikolić, M., Pavlović, V., Labus, N., Zivković, L.,& Stojanović, B.. (2005). Correlation between densification rate and microstructure evolution of mechanically activated BaTiO3. in Ferroelectrics
Taylor & Francis Ltd, Abingdon., 319, 75-85.
https://doi.org/10.1080/00150190590965451

Pavlović VP, Nikolić M, Pavlović V, Labus N, Zivković L, Stojanović B. Correlation between densification rate and microstructure evolution of mechanically activated BaTiO3. in Ferroelectrics. 2005;319:75-85.
doi:10.1080/00150190590965451 .

Pavlović, V. P., Nikolić, MV, Pavlović, Vladimir, Labus, Nebojša, Zivković, L, Stojanović, BD, "Correlation between densification rate and microstructure evolution of mechanically activated BaTiO3" in Ferroelectrics, 319 (2005):75-85,
https://doi.org/10.1080/00150190590965451 . .

TY  - CONF
AU  - Nikolić, MV
AU  - Pavlović, V. P.
AU  - Pavlović, Vladimir
AU  - Labus, Nebojša
AU  - Stojanović, B
PY  - 2005
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/878
AB  - In this paper a practical approach to the analysis of sintering of BaTiO3 using the Master Sintering Curve concept has been presented. Non-isothermal sintering of high-purity non-doped BaTiO3 ceramics was monitored using a sensitive dilatometer at three different heating rates (10, 20 and 30 degrees C/min) up to 1380 degrees C. Densification. of BaTiO3 during sintering was analyzed using the Master Curve Sintering Theory. A MSC was defined characterizing the sintering behavior of barium-titanate regardless of the heating rate. Construction of the MSC enabled estimation of the process activation energy. Using defined MSC, densification behavior of BaTiO3 ceramics during sintering can be predicted for arbitrary temperature-time excursions and these predictions can be used in controlling and planning the sintering process of this material.
PB  - 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes
C3  - Materials Science Forum
T1  - Application of the master sintering curve theory to non-isothermal sintering of BaTiO3 ceramics
EP  - 422
SP  - 417
VL  - 494
DO  - 10.4028/0-87849-971-7.417
ER  - 

@conference{
author = "Nikolić, MV and Pavlović, V. P. and Pavlović, Vladimir and Labus, Nebojša and Stojanović, B",
year = "2005",
abstract = "In this paper a practical approach to the analysis of sintering of BaTiO3 using the Master Sintering Curve concept has been presented. Non-isothermal sintering of high-purity non-doped BaTiO3 ceramics was monitored using a sensitive dilatometer at three different heating rates (10, 20 and 30 degrees C/min) up to 1380 degrees C. Densification. of BaTiO3 during sintering was analyzed using the Master Curve Sintering Theory. A MSC was defined characterizing the sintering behavior of barium-titanate regardless of the heating rate. Construction of the MSC enabled estimation of the process activation energy. Using defined MSC, densification behavior of BaTiO3 ceramics during sintering can be predicted for arbitrary temperature-time excursions and these predictions can be used in controlling and planning the sintering process of this material.",
publisher = "6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes",
journal = "Materials Science Forum",
title = "Application of the master sintering curve theory to non-isothermal sintering of BaTiO3 ceramics",
pages = "422-417",
volume = "494",
doi = "10.4028/0-87849-971-7.417"
}

Nikolić, M., Pavlović, V. P., Pavlović, V., Labus, N.,& Stojanović, B.. (2005). Application of the master sintering curve theory to non-isothermal sintering of BaTiO3 ceramics. in Materials Science Forum
6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes., 494, 417-422.
https://doi.org/10.4028/0-87849-971-7.417

Nikolić M, Pavlović VP, Pavlović V, Labus N, Stojanović B. Application of the master sintering curve theory to non-isothermal sintering of BaTiO3 ceramics. in Materials Science Forum. 2005;494:417-422.
doi:10.4028/0-87849-971-7.417 .

Nikolić, MV, Pavlović, V. P., Pavlović, Vladimir, Labus, Nebojša, Stojanović, B, "Application of the master sintering curve theory to non-isothermal sintering of BaTiO3 ceramics" in Materials Science Forum, 494 (2005):417-422,
https://doi.org/10.4028/0-87849-971-7.417 . .