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  - Nikolić, Maria Vesna
AU  - Slankamenac, Miloš P.
AU  - Nikolić, N.
AU  - Sekulić, D. I.
AU  - Aleksić, Obrad S.
AU  - Mitrić, Miodrag
AU  - Ivetić, Tamara B.
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Pantelija
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/523
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7467
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
T1  - Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn
SP  - 8
EP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7467
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Slankamenac, Miloš P. and Nikolić, N. and Sekulić, D. I. and Aleksić, Obrad S. and Mitrić, Miodrag and Ivetić, Tamara B. and Pavlović, Vladimir B. and Nikolić, Pantelija",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade",
title = "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn",
pages = "8-8",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7467"
}

Nikolić, M. V., Slankamenac, M. P., Nikolić, N., Sekulić, D. I., Aleksić, O. S., Mitrić, M., Ivetić, T. B., Pavlović, V. B.,& Nikolić, P.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
Belgrade : Serbian Ceramic Society., 8-8.
https://hdl.handle.net/21.15107/rcub_vinar_7467

Nikolić MV, Slankamenac MP, Nikolić N, Sekulić DI, Aleksić OS, Mitrić M, Ivetić TB, Pavlović VB, Nikolić P. Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:8-8.
https://hdl.handle.net/21.15107/rcub_vinar_7467 .

Nikolić, Maria Vesna, Slankamenac, Miloš P., Nikolić, N., Sekulić, D. I., Aleksić, Obrad S., Mitrić, Miodrag, Ivetić, Tamara B., Pavlović, Vladimir B., Nikolić, Pantelija, "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):8-8,
https://hdl.handle.net/21.15107/rcub_vinar_7467 .

TY  - JOUR
AU  - Dramićanin, Miroslav
AU  - Ristovski, Zoran
AU  - Nikolić, Pantelija
AU  - Vasiljević, Dana
AU  - Todorović, Dragan M.
PY  - 1995
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7480
AB  - Photoacoustic (PA) heat-transmission measurements were used to study transport in a nearly intrinsic Ge single crystal. A theoretical model was developed which quantitatively describes excess carrier and thermal-wave space distributions, within the semiconductor under monochromatic cw modulated excitation. The PA heat-transmission, reflection, and photothermal-beam-deflection signals can be calculated using this model. It is shown that the frequency characteristic of the measurement system can be eliminated using measurements on different thicknesses of the same sample. It is also shown that both the normalized phase and amplitude spectra, as a function of the modulation frequency, can be used to determine the values of the thermal diffusivity, the excess-carrier lifetime, and the surface recombination velocity.
T2  - Physical Review B
T1  - Photoacoustic investigation of transport in semiconductors: Theoretical and experimental study of a Ge single crystal
SP  - 14226
EP  - 14232
DO  - 10.1103/PhysRevB.51.14226
ER  - 

@article{
author = "Dramićanin, Miroslav and Ristovski, Zoran and Nikolić, Pantelija and Vasiljević, Dana and Todorović, Dragan M.",
year = "1995",
abstract = "Photoacoustic (PA) heat-transmission measurements were used to study transport in a nearly intrinsic Ge single crystal. A theoretical model was developed which quantitatively describes excess carrier and thermal-wave space distributions, within the semiconductor under monochromatic cw modulated excitation. The PA heat-transmission, reflection, and photothermal-beam-deflection signals can be calculated using this model. It is shown that the frequency characteristic of the measurement system can be eliminated using measurements on different thicknesses of the same sample. It is also shown that both the normalized phase and amplitude spectra, as a function of the modulation frequency, can be used to determine the values of the thermal diffusivity, the excess-carrier lifetime, and the surface recombination velocity.",
journal = "Physical Review B",
title = "Photoacoustic investigation of transport in semiconductors: Theoretical and experimental study of a Ge single crystal",
pages = "14226-14232",
doi = "10.1103/PhysRevB.51.14226"
}

Dramićanin, M., Ristovski, Z., Nikolić, P., Vasiljević, D.,& Todorović, D. M.. (1995). Photoacoustic investigation of transport in semiconductors: Theoretical and experimental study of a Ge single crystal. in Physical Review B, 14226-14232.
https://doi.org/10.1103/PhysRevB.51.14226

Dramićanin M, Ristovski Z, Nikolić P, Vasiljević D, Todorović DM. Photoacoustic investigation of transport in semiconductors: Theoretical and experimental study of a Ge single crystal. in Physical Review B. 1995;:14226-14232.
doi:10.1103/PhysRevB.51.14226 .

Dramićanin, Miroslav, Ristovski, Zoran, Nikolić, Pantelija, Vasiljević, Dana, Todorović, Dragan M., "Photoacoustic investigation of transport in semiconductors: Theoretical and experimental study of a Ge single crystal" in Physical Review B (1995):14226-14232,
https://doi.org/10.1103/PhysRevB.51.14226 . .