Radović, Marko B.

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150e89b2-384c-4618-9fce-6947d108ff4c
  • Radović, Marko B. (15)
  • Radović, Marko (1)

Author's Bibliography

Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof

Radović, Marko; Adamović, Tijana; Pavlović, Jelena; Rusmirović, Jelena; Tadić, Vanja; Branković, Zorica; Ivanović, Jasna

(2019)

TY  - JOUR
AU  - Radović, Marko
AU  - Adamović, Tijana
AU  - Pavlović, Jelena
AU  - Rusmirović, Jelena
AU  - Tadić, Vanja
AU  - Branković, Zorica
AU  - Ivanović, Jasna
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8438
AB  - Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing clove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40 °C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt.%, scCO2 pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch50:50) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/gfilm) without an adverse effect on morphological properties. The G/Ch50:50 film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch50:50 and its interaction with the film. Plasticizing effect of scCO2 and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/gfilm into the G/Ch50:50 didn't affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110 °C, which is suitable for most of food packaging applications. © 2019, CI and CEQ. All rights reserved.
T2  - Chemical Industry and Chemical Engineering Quarterly
T1  - Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof
VL  - 25
IS  - 2
SP  - 119
EP  - 130
DO  - 10.2298/CICEQ180323025R
ER  - 
@article{
author = "Radović, Marko and Adamović, Tijana and Pavlović, Jelena and Rusmirović, Jelena and Tadić, Vanja and Branković, Zorica and Ivanović, Jasna",
year = "2019",
abstract = "Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing clove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40 °C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt.%, scCO2 pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch50:50) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/gfilm) without an adverse effect on morphological properties. The G/Ch50:50 film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch50:50 and its interaction with the film. Plasticizing effect of scCO2 and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/gfilm into the G/Ch50:50 didn't affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110 °C, which is suitable for most of food packaging applications. © 2019, CI and CEQ. All rights reserved.",
journal = "Chemical Industry and Chemical Engineering Quarterly",
title = "Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof",
volume = "25",
number = "2",
pages = "119-130",
doi = "10.2298/CICEQ180323025R"
}
Radović, M., Adamović, T., Pavlović, J., Rusmirović, J., Tadić, V., Branković, Z.,& Ivanović, J.. (2019). Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof. in Chemical Industry and Chemical Engineering Quarterly, 25(2), 119-130.
https://doi.org/10.2298/CICEQ180323025R
Radović M, Adamović T, Pavlović J, Rusmirović J, Tadić V, Branković Z, Ivanović J. Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof. in Chemical Industry and Chemical Engineering Quarterly. 2019;25(2):119-130.
doi:10.2298/CICEQ180323025R .
Radović, Marko, Adamović, Tijana, Pavlović, Jelena, Rusmirović, Jelena, Tadić, Vanja, Branković, Zorica, Ivanović, Jasna, "Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof" in Chemical Industry and Chemical Engineering Quarterly, 25, no. 2 (2019):119-130,
https://doi.org/10.2298/CICEQ180323025R . .
3
2
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Infrared study of plasmon-phonon coupling in pure and Nd-doped CeO2-y nanocrystals

Radović, Marko B.; Dohcevic-Mitrovic, Z.; Paunović, Novica M.; Bošković, Snežana B.; Tomić, Nataša; Tadić, Nenad; Belca, I.

(2015)

TY  - JOUR
AU  - Radović, Marko B.
AU  - Dohcevic-Mitrovic, Z.
AU  - Paunović, Novica M.
AU  - Bošković, Snežana B.
AU  - Tomić, Nataša
AU  - Tadić, Nenad
AU  - Belca, I.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/379
AB  - Plasmon-longitudinal-optical (LO) phonon interaction in pure and Nd-doped CeO2-y nanocrystals was investigated by measuring far-infrared reflectivity spectra in the 100-700 cm(-1) spectral range at room temperature. Analysis of the obtained results revealed that the presence of free charge carriers becomes significant with the particle size decrease to nanometer range and increase of lattice defects. The free charge carriers were found to be responsible for a plasmon mode which coupled strongly with two LO phonon modes of ceria. The presence of more pronounced low-frequency Drude tail and the screening of the phonon modes in Nd-doped CeO2-y nanocrystals implied that the Plasmon-LO phonon interaction increased with doping. Factorized and additive dielectric function models were applied to deduce about the coupled and decoupled LO phonon frequencies and the structure of the decoupled plasmon mode in pure and Nd-doped CeO2-y nanocrystals. These models were combined with Bruggeman effective medium approximation in order to properly describe the influence of porosity on the infrared reflectivity spectra. With increasing dopant content, the decoupled plasmon mode exhibited redshift and damping decrease implying that doping induced semiconductor-to-metalic state transition took place.
T2  - Journal of Physics. D: Applied Physics
T1  - Infrared study of plasmon-phonon coupling in pure and Nd-doped CeO2-y nanocrystals
VL  - 48
IS  - 6
DO  - 10.1088/0022-3727/48/6/065301
ER  - 
@article{
author = "Radović, Marko B. and Dohcevic-Mitrovic, Z. and Paunović, Novica M. and Bošković, Snežana B. and Tomić, Nataša and Tadić, Nenad and Belca, I.",
year = "2015",
abstract = "Plasmon-longitudinal-optical (LO) phonon interaction in pure and Nd-doped CeO2-y nanocrystals was investigated by measuring far-infrared reflectivity spectra in the 100-700 cm(-1) spectral range at room temperature. Analysis of the obtained results revealed that the presence of free charge carriers becomes significant with the particle size decrease to nanometer range and increase of lattice defects. The free charge carriers were found to be responsible for a plasmon mode which coupled strongly with two LO phonon modes of ceria. The presence of more pronounced low-frequency Drude tail and the screening of the phonon modes in Nd-doped CeO2-y nanocrystals implied that the Plasmon-LO phonon interaction increased with doping. Factorized and additive dielectric function models were applied to deduce about the coupled and decoupled LO phonon frequencies and the structure of the decoupled plasmon mode in pure and Nd-doped CeO2-y nanocrystals. These models were combined with Bruggeman effective medium approximation in order to properly describe the influence of porosity on the infrared reflectivity spectra. With increasing dopant content, the decoupled plasmon mode exhibited redshift and damping decrease implying that doping induced semiconductor-to-metalic state transition took place.",
journal = "Journal of Physics. D: Applied Physics",
title = "Infrared study of plasmon-phonon coupling in pure and Nd-doped CeO2-y nanocrystals",
volume = "48",
number = "6",
doi = "10.1088/0022-3727/48/6/065301"
}
Radović, M. B., Dohcevic-Mitrovic, Z., Paunović, N. M., Bošković, S. B., Tomić, N., Tadić, N.,& Belca, I.. (2015). Infrared study of plasmon-phonon coupling in pure and Nd-doped CeO2-y nanocrystals. in Journal of Physics. D: Applied Physics, 48(6).
https://doi.org/10.1088/0022-3727/48/6/065301
Radović MB, Dohcevic-Mitrovic Z, Paunović NM, Bošković SB, Tomić N, Tadić N, Belca I. Infrared study of plasmon-phonon coupling in pure and Nd-doped CeO2-y nanocrystals. in Journal of Physics. D: Applied Physics. 2015;48(6).
doi:10.1088/0022-3727/48/6/065301 .
Radović, Marko B., Dohcevic-Mitrovic, Z., Paunović, Novica M., Bošković, Snežana B., Tomić, Nataša, Tadić, Nenad, Belca, I., "Infrared study of plasmon-phonon coupling in pure and Nd-doped CeO2-y nanocrystals" in Journal of Physics. D: Applied Physics, 48, no. 6 (2015),
https://doi.org/10.1088/0022-3727/48/6/065301 . .
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Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles

Dohcevic-Mitrovic, Z. D.; Paunović, Novica M.; Matović, Branko; Osiceanu, P.; Scurtu, R.; Askrabic, S.; Radović, Marko B.

(2015)

TY  - JOUR
AU  - Dohcevic-Mitrovic, Z. D.
AU  - Paunović, Novica M.
AU  - Matović, Branko
AU  - Osiceanu, P.
AU  - Scurtu, R.
AU  - Askrabic, S.
AU  - Radović, Marko B.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/505
AB  - Y-doped HfO2 nanopowders, produced by metathesis synthesis, exhibit ferromagnetism at room temperature. The X-ray diffraction and Raman measurements have shown that HfO2 nanopowders undergo phase transformation from monoclinic to tetragonal and cubic phase with increasing of Y content. The X-ray photoelectron spectroscopy and Raman analysis gave evidence that Y-doped HfO2 nanopowders are oxygen deficient. The ferromagnetic properties of Y-doped HfO2 nanocrystals are dependent on crystal structure changes. The structural transformation from monoclinic to tetragonal phase with Y doping is followed by increased ferromagnetic ordering because of the increased concentration of oxygen vacancies (V-O) in different charge states. Higher Y content favors the formation of cubic phase and the ferromagnetism significantly weakens. In cubic hafnia phase, yttrium can form (V-O-Y-Hf) defect complexes in different charge states. The appearance of these complexes can be responsible for the degradation of ferromagnetic ordering. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles
VL  - 41
IS  - 5
SP  - 6970
EP  - 6977
DO  - 10.1016/j.ceramint.2015.02.002
ER  - 
@article{
author = "Dohcevic-Mitrovic, Z. D. and Paunović, Novica M. and Matović, Branko and Osiceanu, P. and Scurtu, R. and Askrabic, S. and Radović, Marko B.",
year = "2015",
abstract = "Y-doped HfO2 nanopowders, produced by metathesis synthesis, exhibit ferromagnetism at room temperature. The X-ray diffraction and Raman measurements have shown that HfO2 nanopowders undergo phase transformation from monoclinic to tetragonal and cubic phase with increasing of Y content. The X-ray photoelectron spectroscopy and Raman analysis gave evidence that Y-doped HfO2 nanopowders are oxygen deficient. The ferromagnetic properties of Y-doped HfO2 nanocrystals are dependent on crystal structure changes. The structural transformation from monoclinic to tetragonal phase with Y doping is followed by increased ferromagnetic ordering because of the increased concentration of oxygen vacancies (V-O) in different charge states. Higher Y content favors the formation of cubic phase and the ferromagnetism significantly weakens. In cubic hafnia phase, yttrium can form (V-O-Y-Hf) defect complexes in different charge states. The appearance of these complexes can be responsible for the degradation of ferromagnetic ordering. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles",
volume = "41",
number = "5",
pages = "6970-6977",
doi = "10.1016/j.ceramint.2015.02.002"
}
Dohcevic-Mitrovic, Z. D., Paunović, N. M., Matović, B., Osiceanu, P., Scurtu, R., Askrabic, S.,& Radović, M. B.. (2015). Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles. in Ceramics International, 41(5), 6970-6977.
https://doi.org/10.1016/j.ceramint.2015.02.002
Dohcevic-Mitrovic ZD, Paunović NM, Matović B, Osiceanu P, Scurtu R, Askrabic S, Radović MB. Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles. in Ceramics International. 2015;41(5):6970-6977.
doi:10.1016/j.ceramint.2015.02.002 .
Dohcevic-Mitrovic, Z. D., Paunović, Novica M., Matović, Branko, Osiceanu, P., Scurtu, R., Askrabic, S., Radović, Marko B., "Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles" in Ceramics International, 41, no. 5 (2015):6970-6977,
https://doi.org/10.1016/j.ceramint.2015.02.002 . .
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Nanocrystaline solid solution CeO2-Bi2O3

Prekajski, Marija D.; Dohcevic-Mitrovic, Z.; Radović, Marko B.; Babić, Biljana M.; Pantić, Jelena R.; Kremenović, Aleksandar S.; Matović, Branko

(2012)

TY  - JOUR
AU  - Prekajski, Marija D.
AU  - Dohcevic-Mitrovic, Z.
AU  - Radović, Marko B.
AU  - Babić, Biljana M.
AU  - Pantić, Jelena R.
AU  - Kremenović, Aleksandar S.
AU  - Matović, Branko
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4832
AB  - Nanocrystalline powders of solid solution CeO2-Bi2O3 were synthesized by self-propagating room temperature reaction (SPRT) procedure with composition (Ce1-xBixO2-delta where the x = 0.1-0.5). X-ray diffraction analyses show that for x LT 0.50 a solid solution with fluorite structure is formed. Rietvelds structure refinement method was applied to characterize prepared powders and its microstructure (size strain). The lattice parameters increase according to Vegards rule with increasing of Bi concentration. The average crystallite size is about 2-3 nm. Spectroscopic ellipsometry and Raman scattering measurements were used to characterize the samples at room temperature. The Raman measurements demonstrated electron molecular vibrational coupling and increase of oxygen vacancy concentration whereas increase of Bi content provokes a small decrease of optical absorption edge in comparison with pure ceria. Specific surface area of obtained powders was measured by Brunauer-Emmet-Teller (BET) method. (C) 2011 Elsevier Ltd. All rights reserved.
T2  - Journal of the European Ceramic Society
T1  - Nanocrystaline solid solution CeO2-Bi2O3
VL  - 32
IS  - 9
SP  - 1983
EP  - 1987
DO  - 10.1016/j.jeurceramsoc.2011.12.009
ER  - 
@article{
author = "Prekajski, Marija D. and Dohcevic-Mitrovic, Z. and Radović, Marko B. and Babić, Biljana M. and Pantić, Jelena R. and Kremenović, Aleksandar S. and Matović, Branko",
year = "2012",
abstract = "Nanocrystalline powders of solid solution CeO2-Bi2O3 were synthesized by self-propagating room temperature reaction (SPRT) procedure with composition (Ce1-xBixO2-delta where the x = 0.1-0.5). X-ray diffraction analyses show that for x LT 0.50 a solid solution with fluorite structure is formed. Rietvelds structure refinement method was applied to characterize prepared powders and its microstructure (size strain). The lattice parameters increase according to Vegards rule with increasing of Bi concentration. The average crystallite size is about 2-3 nm. Spectroscopic ellipsometry and Raman scattering measurements were used to characterize the samples at room temperature. The Raman measurements demonstrated electron molecular vibrational coupling and increase of oxygen vacancy concentration whereas increase of Bi content provokes a small decrease of optical absorption edge in comparison with pure ceria. Specific surface area of obtained powders was measured by Brunauer-Emmet-Teller (BET) method. (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "Journal of the European Ceramic Society",
title = "Nanocrystaline solid solution CeO2-Bi2O3",
volume = "32",
number = "9",
pages = "1983-1987",
doi = "10.1016/j.jeurceramsoc.2011.12.009"
}
Prekajski, M. D., Dohcevic-Mitrovic, Z., Radović, M. B., Babić, B. M., Pantić, J. R., Kremenović, A. S.,& Matović, B.. (2012). Nanocrystaline solid solution CeO2-Bi2O3. in Journal of the European Ceramic Society, 32(9), 1983-1987.
https://doi.org/10.1016/j.jeurceramsoc.2011.12.009
Prekajski MD, Dohcevic-Mitrovic Z, Radović MB, Babić BM, Pantić JR, Kremenović AS, Matović B. Nanocrystaline solid solution CeO2-Bi2O3. in Journal of the European Ceramic Society. 2012;32(9):1983-1987.
doi:10.1016/j.jeurceramsoc.2011.12.009 .
Prekajski, Marija D., Dohcevic-Mitrovic, Z., Radović, Marko B., Babić, Biljana M., Pantić, Jelena R., Kremenović, Aleksandar S., Matović, Branko, "Nanocrystaline solid solution CeO2-Bi2O3" in Journal of the European Ceramic Society, 32, no. 9 (2012):1983-1987,
https://doi.org/10.1016/j.jeurceramsoc.2011.12.009 . .
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24

Mesoporous CeO2 nanopowders with different particle sizes

Dohcevic-Mitrovic, Z.; Golubović, Aleksandar V.; Radović, Marko B.; Fruth, V.; Kremenović, Aleksandar S.; Meden, A.; Babić, Biljana M.; Šćepanović, Maja; Popović, Zoran V.

(2011)

TY  - JOUR
AU  - Dohcevic-Mitrovic, Z.
AU  - Golubović, Aleksandar V.
AU  - Radović, Marko B.
AU  - Fruth, V.
AU  - Kremenović, Aleksandar S.
AU  - Meden, A.
AU  - Babić, Biljana M.
AU  - Šćepanović, Maja
AU  - Popović, Zoran V.
PY  - 2011
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4421
AB  - Ultrafine porous cerium dioxide nanopowders were synthesized by relatively new and cost-effective hydrothermal method varying the main synthesis parameters, temperature of calcination and type of basic solution. Characterization of the as-produced powders was performed by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman scattering and Brunauer-Emmett-Teller (BET) method. This study reveals that difference in synthesis parameters has strong influence on the particle size, surface area, and pore size distribution enabling the more precise control of material properties very important for catalytic and nanosensor applications. (C) 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim
T2  - Physica Status Solidi. A: Applications and Materials Science
T1  - Mesoporous CeO2 nanopowders with different particle sizes
VL  - 208
IS  - 6
SP  - 1399
EP  - 1402
DO  - 10.1002/pssa.201000355
ER  - 
@article{
author = "Dohcevic-Mitrovic, Z. and Golubović, Aleksandar V. and Radović, Marko B. and Fruth, V. and Kremenović, Aleksandar S. and Meden, A. and Babić, Biljana M. and Šćepanović, Maja and Popović, Zoran V.",
year = "2011",
abstract = "Ultrafine porous cerium dioxide nanopowders were synthesized by relatively new and cost-effective hydrothermal method varying the main synthesis parameters, temperature of calcination and type of basic solution. Characterization of the as-produced powders was performed by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman scattering and Brunauer-Emmett-Teller (BET) method. This study reveals that difference in synthesis parameters has strong influence on the particle size, surface area, and pore size distribution enabling the more precise control of material properties very important for catalytic and nanosensor applications. (C) 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim",
journal = "Physica Status Solidi. A: Applications and Materials Science",
title = "Mesoporous CeO2 nanopowders with different particle sizes",
volume = "208",
number = "6",
pages = "1399-1402",
doi = "10.1002/pssa.201000355"
}
Dohcevic-Mitrovic, Z., Golubović, A. V., Radović, M. B., Fruth, V., Kremenović, A. S., Meden, A., Babić, B. M., Šćepanović, M.,& Popović, Z. V.. (2011). Mesoporous CeO2 nanopowders with different particle sizes. in Physica Status Solidi. A: Applications and Materials Science, 208(6), 1399-1402.
https://doi.org/10.1002/pssa.201000355
Dohcevic-Mitrovic Z, Golubović AV, Radović MB, Fruth V, Kremenović AS, Meden A, Babić BM, Šćepanović M, Popović ZV. Mesoporous CeO2 nanopowders with different particle sizes. in Physica Status Solidi. A: Applications and Materials Science. 2011;208(6):1399-1402.
doi:10.1002/pssa.201000355 .
Dohcevic-Mitrovic, Z., Golubović, Aleksandar V., Radović, Marko B., Fruth, V., Kremenović, Aleksandar S., Meden, A., Babić, Biljana M., Šćepanović, Maja, Popović, Zoran V., "Mesoporous CeO2 nanopowders with different particle sizes" in Physica Status Solidi. A: Applications and Materials Science, 208, no. 6 (2011):1399-1402,
https://doi.org/10.1002/pssa.201000355 . .
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2

New synthetic route for nanocrystalline boron nitride powder

Matović, Branko; Babić, Biljana M.; Devečerski, Aleksandar; Radović, Marko B.; Minovic, A.; Miljkovic, M.; Bošković, Snežana B.

(2011)

TY  - JOUR
AU  - Matović, Branko
AU  - Babić, Biljana M.
AU  - Devečerski, Aleksandar
AU  - Radović, Marko B.
AU  - Minovic, A.
AU  - Miljkovic, M.
AU  - Bošković, Snežana B.
PY  - 2011
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4190
AB  - Nanocrystalline hexagonal boron nitride powder (h-BN) was synthesized by sol-gel polycondensation of resorcinol and formaldehyde in the presence of boric acid followed by freeze drying. Pyrolysis and subsequent heat treatment of these cryogels resulted in formation of boron nitride powder. Characterization by nitrogen adsorption showed that precomposite cryogels and the BN powders were micro and mesoporous materials with high surface areas. Materials have been analyzed by means of X-ray diffraction, Raman scattering and electron microscopy methods. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - New synthetic route for nanocrystalline boron nitride powder
VL  - 65
IS  - 2
SP  - 307
EP  - 309
DO  - 10.1016/j.matlet.2010.10.005
ER  - 
@article{
author = "Matović, Branko and Babić, Biljana M. and Devečerski, Aleksandar and Radović, Marko B. and Minovic, A. and Miljkovic, M. and Bošković, Snežana B.",
year = "2011",
abstract = "Nanocrystalline hexagonal boron nitride powder (h-BN) was synthesized by sol-gel polycondensation of resorcinol and formaldehyde in the presence of boric acid followed by freeze drying. Pyrolysis and subsequent heat treatment of these cryogels resulted in formation of boron nitride powder. Characterization by nitrogen adsorption showed that precomposite cryogels and the BN powders were micro and mesoporous materials with high surface areas. Materials have been analyzed by means of X-ray diffraction, Raman scattering and electron microscopy methods. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "New synthetic route for nanocrystalline boron nitride powder",
volume = "65",
number = "2",
pages = "307-309",
doi = "10.1016/j.matlet.2010.10.005"
}
Matović, B., Babić, B. M., Devečerski, A., Radović, M. B., Minovic, A., Miljkovic, M.,& Bošković, S. B.. (2011). New synthetic route for nanocrystalline boron nitride powder. in Materials Letters, 65(2), 307-309.
https://doi.org/10.1016/j.matlet.2010.10.005
Matović B, Babić BM, Devečerski A, Radović MB, Minovic A, Miljkovic M, Bošković SB. New synthetic route for nanocrystalline boron nitride powder. in Materials Letters. 2011;65(2):307-309.
doi:10.1016/j.matlet.2010.10.005 .
Matović, Branko, Babić, Biljana M., Devečerski, Aleksandar, Radović, Marko B., Minovic, A., Miljkovic, M., Bošković, Snežana B., "New synthetic route for nanocrystalline boron nitride powder" in Materials Letters, 65, no. 2 (2011):307-309,
https://doi.org/10.1016/j.matlet.2010.10.005 . .
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12

Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals

Dohcevic-Mitrovic, Z. D.; Paunović, Novica M.; Radović, Marko B.; Popović, Zoran V.; Matović, Branko; Cekić, Božidar Đ.; Ivanovski, Valentin N.

(2010)

TY  - JOUR
AU  - Dohcevic-Mitrovic, Z. D.
AU  - Paunović, Novica M.
AU  - Radović, Marko B.
AU  - Popović, Zoran V.
AU  - Matović, Branko
AU  - Cekić, Božidar Đ.
AU  - Ivanovski, Valentin N.
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4007
AB  - Room-temperature ferromagnetism was observed in undoped and Fe(2+(3+))-doped CeO(2) nanocrystals. In Fe-doped samples the enhancement of ferromagnetic ordering occurs by changing the valence state of Fe ions, whereas Raman spectra demonstrated strong electron-molecular vibrational coupling and increase in oxygen vacancy concentration. Air annealing showed degradation of ferromagnetic ordering and appearance of hematite phase in Fe(3+)-doped sample. The observed ferromagnetic coupling in Fe-doped samples, associated with the presence of magnetic ions mediated by single charged O(2-) vacancies, demonstrated that valence state of dopant has a strong influence on magnetic properties of CeO(2) nanoparticles. (C) American Institute of Physics. [doi: 10.1063/1.3431581]
T2  - Applied Physics Letters
T1  - Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals
VL  - 96
IS  - 20
DO  - 10.1063/1.3431581
ER  - 
@article{
author = "Dohcevic-Mitrovic, Z. D. and Paunović, Novica M. and Radović, Marko B. and Popović, Zoran V. and Matović, Branko and Cekić, Božidar Đ. and Ivanovski, Valentin N.",
year = "2010",
abstract = "Room-temperature ferromagnetism was observed in undoped and Fe(2+(3+))-doped CeO(2) nanocrystals. In Fe-doped samples the enhancement of ferromagnetic ordering occurs by changing the valence state of Fe ions, whereas Raman spectra demonstrated strong electron-molecular vibrational coupling and increase in oxygen vacancy concentration. Air annealing showed degradation of ferromagnetic ordering and appearance of hematite phase in Fe(3+)-doped sample. The observed ferromagnetic coupling in Fe-doped samples, associated with the presence of magnetic ions mediated by single charged O(2-) vacancies, demonstrated that valence state of dopant has a strong influence on magnetic properties of CeO(2) nanoparticles. (C) American Institute of Physics. [doi: 10.1063/1.3431581]",
journal = "Applied Physics Letters",
title = "Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals",
volume = "96",
number = "20",
doi = "10.1063/1.3431581"
}
Dohcevic-Mitrovic, Z. D., Paunović, N. M., Radović, M. B., Popović, Z. V., Matović, B., Cekić, B. Đ.,& Ivanovski, V. N.. (2010). Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals. in Applied Physics Letters, 96(20).
https://doi.org/10.1063/1.3431581
Dohcevic-Mitrovic ZD, Paunović NM, Radović MB, Popović ZV, Matović B, Cekić BĐ, Ivanovski VN. Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals. in Applied Physics Letters. 2010;96(20).
doi:10.1063/1.3431581 .
Dohcevic-Mitrovic, Z. D., Paunović, Novica M., Radović, Marko B., Popović, Zoran V., Matović, Branko, Cekić, Božidar Đ., Ivanovski, Valentin N., "Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals" in Applied Physics Letters, 96, no. 20 (2010),
https://doi.org/10.1063/1.3431581 . .
37
37
36

Synthesis and characterization of the nanometric Pr-doped ceria

Matović, Branko; Bošković, Snežana B.; Logar, Mihovil; Radović, Marko B.; Dohcevic-Mitrovic, Z.; Popović, Zoran V.; Aldinger, F.

(2010)

TY  - JOUR
AU  - Matović, Branko
AU  - Bošković, Snežana B.
AU  - Logar, Mihovil
AU  - Radović, Marko B.
AU  - Dohcevic-Mitrovic, Z.
AU  - Popović, Zoran V.
AU  - Aldinger, F.
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4089
AB  - In this paper nanometric powders of solid solution of the host compound ceria (CeO(2)) with Pr dopant in the lattice were synthesized by self-propagating room temperature (SPRT) synthesis with composition (Ce(0.9)Pr(0.1)O(2-delta)). Powder properties such as specific surface area crystallite and particle size and lattice parameters have been studied. BET, TEM, X-ray diffraction (XRD) analysis and Raman scattering measurements were used to characterize the samples at room temperature. Obtained solid solution exhibits a fluorite-type crystal structure. The average crystallite size is about 3-4 nm. Williamson-Hall plots were used to separate the effect of the size and strain in the nanocrystals. It is noticed the redshift and asymmetric broadening of the Raman F(2g) mode which is explained with nanocrystalline nature of powders. Color characters of solid solution depending on calcinations temperature and their position in the chromaticity diagram were studied by UV-vis spectrophotometry (diffuse reflectance). (C) 2010 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Synthesis and characterization of the nanometric Pr-doped ceria
VL  - 505
IS  - 1
SP  - 235
EP  - 238
DO  - 10.1016/j.jallcom.2010.06.036
ER  - 
@article{
author = "Matović, Branko and Bošković, Snežana B. and Logar, Mihovil and Radović, Marko B. and Dohcevic-Mitrovic, Z. and Popović, Zoran V. and Aldinger, F.",
year = "2010",
abstract = "In this paper nanometric powders of solid solution of the host compound ceria (CeO(2)) with Pr dopant in the lattice were synthesized by self-propagating room temperature (SPRT) synthesis with composition (Ce(0.9)Pr(0.1)O(2-delta)). Powder properties such as specific surface area crystallite and particle size and lattice parameters have been studied. BET, TEM, X-ray diffraction (XRD) analysis and Raman scattering measurements were used to characterize the samples at room temperature. Obtained solid solution exhibits a fluorite-type crystal structure. The average crystallite size is about 3-4 nm. Williamson-Hall plots were used to separate the effect of the size and strain in the nanocrystals. It is noticed the redshift and asymmetric broadening of the Raman F(2g) mode which is explained with nanocrystalline nature of powders. Color characters of solid solution depending on calcinations temperature and their position in the chromaticity diagram were studied by UV-vis spectrophotometry (diffuse reflectance). (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Synthesis and characterization of the nanometric Pr-doped ceria",
volume = "505",
number = "1",
pages = "235-238",
doi = "10.1016/j.jallcom.2010.06.036"
}
Matović, B., Bošković, S. B., Logar, M., Radović, M. B., Dohcevic-Mitrovic, Z., Popović, Z. V.,& Aldinger, F.. (2010). Synthesis and characterization of the nanometric Pr-doped ceria. in Journal of Alloys and Compounds, 505(1), 235-238.
https://doi.org/10.1016/j.jallcom.2010.06.036
Matović B, Bošković SB, Logar M, Radović MB, Dohcevic-Mitrovic Z, Popović ZV, Aldinger F. Synthesis and characterization of the nanometric Pr-doped ceria. in Journal of Alloys and Compounds. 2010;505(1):235-238.
doi:10.1016/j.jallcom.2010.06.036 .
Matović, Branko, Bošković, Snežana B., Logar, Mihovil, Radović, Marko B., Dohcevic-Mitrovic, Z., Popović, Zoran V., Aldinger, F., "Synthesis and characterization of the nanometric Pr-doped ceria" in Journal of Alloys and Compounds, 505, no. 1 (2010):235-238,
https://doi.org/10.1016/j.jallcom.2010.06.036 . .
11
11
12

Synthesis and characterization of ceria based nanometric powders

Matović, Branko; Dohcevic-Mitrovic, Z.; Radović, Marko B.; Brankovic, Z.; Branković, Goran O.; Bošković, Snežana B.; Popović, Zoran V.

(2009)

TY  - JOUR
AU  - Matović, Branko
AU  - Dohcevic-Mitrovic, Z.
AU  - Radović, Marko B.
AU  - Brankovic, Z.
AU  - Branković, Goran O.
AU  - Bošković, Snežana B.
AU  - Popović, Zoran V.
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3732
AB  - Nanopowdered solid solution Ce(1-x)Fe(x)O(2-delta) samples (0 LT = x LT = 0.1) were synthesized by a self-propagating room temperature synthesis (SPRT). XRD and Raman spectroscopy at room temperature were used to study the vibrational properties of these materials as well as the Fe solubility in ceria lattice. Results show that all obtained powders are solid solutions with a fluorite-type crystal structure and all powders were nanometric in size. The average size of Ce(1-x)Fe(x)O(2-delta) particles lies about 5 nm. The results of electrical properties of the sintered samples investigated by an ac impedance spectroscopy are also presented and discussed. It was confirmed that Fe(3+) doped ceria material has a potential as electrolyte for intermediate-temperature solid oxide fuel cell applications. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Journal of Power Sources
T1  - Synthesis and characterization of ceria based nanometric powders
VL  - 193
IS  - 1
SP  - 146
EP  - 149
DO  - 10.1016/j.jpowsour.2009.03.053
ER  - 
@article{
author = "Matović, Branko and Dohcevic-Mitrovic, Z. and Radović, Marko B. and Brankovic, Z. and Branković, Goran O. and Bošković, Snežana B. and Popović, Zoran V.",
year = "2009",
abstract = "Nanopowdered solid solution Ce(1-x)Fe(x)O(2-delta) samples (0 LT = x LT = 0.1) were synthesized by a self-propagating room temperature synthesis (SPRT). XRD and Raman spectroscopy at room temperature were used to study the vibrational properties of these materials as well as the Fe solubility in ceria lattice. Results show that all obtained powders are solid solutions with a fluorite-type crystal structure and all powders were nanometric in size. The average size of Ce(1-x)Fe(x)O(2-delta) particles lies about 5 nm. The results of electrical properties of the sintered samples investigated by an ac impedance spectroscopy are also presented and discussed. It was confirmed that Fe(3+) doped ceria material has a potential as electrolyte for intermediate-temperature solid oxide fuel cell applications. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Journal of Power Sources",
title = "Synthesis and characterization of ceria based nanometric powders",
volume = "193",
number = "1",
pages = "146-149",
doi = "10.1016/j.jpowsour.2009.03.053"
}
Matović, B., Dohcevic-Mitrovic, Z., Radović, M. B., Brankovic, Z., Branković, G. O., Bošković, S. B.,& Popović, Z. V.. (2009). Synthesis and characterization of ceria based nanometric powders. in Journal of Power Sources, 193(1), 146-149.
https://doi.org/10.1016/j.jpowsour.2009.03.053
Matović B, Dohcevic-Mitrovic Z, Radović MB, Brankovic Z, Branković GO, Bošković SB, Popović ZV. Synthesis and characterization of ceria based nanometric powders. in Journal of Power Sources. 2009;193(1):146-149.
doi:10.1016/j.jpowsour.2009.03.053 .
Matović, Branko, Dohcevic-Mitrovic, Z., Radović, Marko B., Brankovic, Z., Branković, Goran O., Bošković, Snežana B., Popović, Zoran V., "Synthesis and characterization of ceria based nanometric powders" in Journal of Power Sources, 193, no. 1 (2009):146-149,
https://doi.org/10.1016/j.jpowsour.2009.03.053 . .
29
32
36

Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals

Radović, Marko B.; Dohcevic-Mitrovic, Z. D.; Golubović, Aleksandar V.; Matović, Branko; Šćepanović, Maja; Popović, Zoran V.

(2009)

TY  - JOUR
AU  - Radović, Marko B.
AU  - Dohcevic-Mitrovic, Z. D.
AU  - Golubović, Aleksandar V.
AU  - Matović, Branko
AU  - Šćepanović, Maja
AU  - Popović, Zoran V.
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6845
AB  - Pure and 10 mol% Fe3+ doped CeO2 nanocrystals were synthesized by hydrothermal method using two different basic solutions (NH4OH and NaOH). All the samples were calcinated at 140 degrees C and 200 degrees C. The characterization of crystalline structure, vibrational and optical properties was performed using X-ray diffraction, Raman spectroscopy and spectroscopic ellipsometry. The obtained results showed that the Fe-doped samples are solid solutions with different size of nanocrystals, very dependent on the synthesis temperature and type of basic solution. The Raman measurements demonstrated electron molecular vibrational coupling and increase of oxygen vacancy concentration whereas doping provokes a small decrease of optical absorption edge in comparison with pure ceria.
T2  - Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics
T1  - Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals
VL  - 116
IS  - 4
SP  - 614
EP  - 617
DO  - 10.12693/APhysPolA.116.614
ER  - 
@article{
author = "Radović, Marko B. and Dohcevic-Mitrovic, Z. D. and Golubović, Aleksandar V. and Matović, Branko and Šćepanović, Maja and Popović, Zoran V.",
year = "2009",
abstract = "Pure and 10 mol% Fe3+ doped CeO2 nanocrystals were synthesized by hydrothermal method using two different basic solutions (NH4OH and NaOH). All the samples were calcinated at 140 degrees C and 200 degrees C. The characterization of crystalline structure, vibrational and optical properties was performed using X-ray diffraction, Raman spectroscopy and spectroscopic ellipsometry. The obtained results showed that the Fe-doped samples are solid solutions with different size of nanocrystals, very dependent on the synthesis temperature and type of basic solution. The Raman measurements demonstrated electron molecular vibrational coupling and increase of oxygen vacancy concentration whereas doping provokes a small decrease of optical absorption edge in comparison with pure ceria.",
journal = "Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics",
title = "Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals",
volume = "116",
number = "4",
pages = "614-617",
doi = "10.12693/APhysPolA.116.614"
}
Radović, M. B., Dohcevic-Mitrovic, Z. D., Golubović, A. V., Matović, B., Šćepanović, M.,& Popović, Z. V.. (2009). Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals. in Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 116(4), 614-617.
https://doi.org/10.12693/APhysPolA.116.614
Radović MB, Dohcevic-Mitrovic ZD, Golubović AV, Matović B, Šćepanović M, Popović ZV. Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals. in Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics. 2009;116(4):614-617.
doi:10.12693/APhysPolA.116.614 .
Radović, Marko B., Dohcevic-Mitrovic, Z. D., Golubović, Aleksandar V., Matović, Branko, Šćepanović, Maja, Popović, Zoran V., "Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals" in Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 116, no. 4 (2009):614-617,
https://doi.org/10.12693/APhysPolA.116.614 . .
9
9
9

Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals

Radović, Marko B.; Dohcevic-Mitrovic, Z.; Paunović, Novica M.; Šćepanović, Maja; Matović, Branko; Popović, Zoran V.

(2009)

TY  - JOUR
AU  - Radović, Marko B.
AU  - Dohcevic-Mitrovic, Z.
AU  - Paunović, Novica M.
AU  - Šćepanović, Maja
AU  - Matović, Branko
AU  - Popović, Zoran V.
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6835
AB  - We have measured the Raman scattering and magnetization of pure and Fe2+(Fe3+) doped CeO2 nanopowders at room temperature. The Raman scattering spectra revealed the existence of CeO2 fluorite cubic structure for all investigated samples. The Raman active mode at about 600 cm(-1), seen in all samples, can be ascribed to the CeO2 intrinsic oxygen vacancies. Additional Raman modes at 720 cm(-1), 1320 cm(-1) and 1600 cm(-1), which appear in the spectra of doped samples, can be assigned to maghemite (gamma-Fe2O3) cation deficient structure, to 2 omega(LO) IR-allowed overtone and two magnon structure, respectively. This implies that our powders are composed of mixed valence states and have defective structure. Presence of oxygen defect states and magnetic ions can be responsible for the observed ferromagnetism at room temperature in both pure and Fe doped samples.
T2  - Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics
T1  - Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals
VL  - 116
IS  - 1
SP  - 84
EP  - 87
DO  - 10.12693/APhysPolA.116.84
ER  - 
@article{
author = "Radović, Marko B. and Dohcevic-Mitrovic, Z. and Paunović, Novica M. and Šćepanović, Maja and Matović, Branko and Popović, Zoran V.",
year = "2009",
abstract = "We have measured the Raman scattering and magnetization of pure and Fe2+(Fe3+) doped CeO2 nanopowders at room temperature. The Raman scattering spectra revealed the existence of CeO2 fluorite cubic structure for all investigated samples. The Raman active mode at about 600 cm(-1), seen in all samples, can be ascribed to the CeO2 intrinsic oxygen vacancies. Additional Raman modes at 720 cm(-1), 1320 cm(-1) and 1600 cm(-1), which appear in the spectra of doped samples, can be assigned to maghemite (gamma-Fe2O3) cation deficient structure, to 2 omega(LO) IR-allowed overtone and two magnon structure, respectively. This implies that our powders are composed of mixed valence states and have defective structure. Presence of oxygen defect states and magnetic ions can be responsible for the observed ferromagnetism at room temperature in both pure and Fe doped samples.",
journal = "Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics",
title = "Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals",
volume = "116",
number = "1",
pages = "84-87",
doi = "10.12693/APhysPolA.116.84"
}
Radović, M. B., Dohcevic-Mitrovic, Z., Paunović, N. M., Šćepanović, M., Matović, B.,& Popović, Z. V.. (2009). Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals. in Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 116(1), 84-87.
https://doi.org/10.12693/APhysPolA.116.84
Radović MB, Dohcevic-Mitrovic Z, Paunović NM, Šćepanović M, Matović B, Popović ZV. Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals. in Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics. 2009;116(1):84-87.
doi:10.12693/APhysPolA.116.84 .
Radović, Marko B., Dohcevic-Mitrovic, Z., Paunović, Novica M., Šćepanović, Maja, Matović, Branko, Popović, Zoran V., "Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals" in Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 116, no. 1 (2009):84-87,
https://doi.org/10.12693/APhysPolA.116.84 . .
11
13
14

Temperature-dependent raman study of Ce0.75Nd0.25O2-delta nanocrystals

Dohcevic-Mitrovic, Z. D.; Radović, Marko B.; Šćepanović, Maja; Grujić-Brojčin, Mirjana; Popović, Zoran V.; Matović, Branko; Bošković, Snežana B.

(2007)

TY  - JOUR
AU  - Dohcevic-Mitrovic, Z. D.
AU  - Radović, Marko B.
AU  - Šćepanović, Maja
AU  - Grujić-Brojčin, Mirjana
AU  - Popović, Zoran V.
AU  - Matović, Branko
AU  - Bošković, Snežana B.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3318
AB  - Raman spectra of Nd doped ceria nanocrystals were measured by gradual heating and cooling over the temperature range of 293-1073 K and analyzed using the phonon confinement model that incorporates inhomogeneous strain and anharmonic effects. We have demonstrated that in nanograins, four-phonon anharmonic processes are more dominant at higher temperatures than size effects. After the heat treatment, Nd doped ceria nanocrystals remain of nanometric range (similar to 20 nm) while the concentration of oxygen vacancies is still high in ceria lattice, making this material convenient for solid oxide fuel cells application. (c) 2007 American Institute of Physics.
T2  - Applied Physics Letters
T1  - Temperature-dependent raman study of Ce0.75Nd0.25O2-delta nanocrystals
VL  - 91
IS  - 20
DO  - 10.1063/1.2815928
ER  - 
@article{
author = "Dohcevic-Mitrovic, Z. D. and Radović, Marko B. and Šćepanović, Maja and Grujić-Brojčin, Mirjana and Popović, Zoran V. and Matović, Branko and Bošković, Snežana B.",
year = "2007",
abstract = "Raman spectra of Nd doped ceria nanocrystals were measured by gradual heating and cooling over the temperature range of 293-1073 K and analyzed using the phonon confinement model that incorporates inhomogeneous strain and anharmonic effects. We have demonstrated that in nanograins, four-phonon anharmonic processes are more dominant at higher temperatures than size effects. After the heat treatment, Nd doped ceria nanocrystals remain of nanometric range (similar to 20 nm) while the concentration of oxygen vacancies is still high in ceria lattice, making this material convenient for solid oxide fuel cells application. (c) 2007 American Institute of Physics.",
journal = "Applied Physics Letters",
title = "Temperature-dependent raman study of Ce0.75Nd0.25O2-delta nanocrystals",
volume = "91",
number = "20",
doi = "10.1063/1.2815928"
}
Dohcevic-Mitrovic, Z. D., Radović, M. B., Šćepanović, M., Grujić-Brojčin, M., Popović, Z. V., Matović, B.,& Bošković, S. B.. (2007). Temperature-dependent raman study of Ce0.75Nd0.25O2-delta nanocrystals. in Applied Physics Letters, 91(20).
https://doi.org/10.1063/1.2815928
Dohcevic-Mitrovic ZD, Radović MB, Šćepanović M, Grujić-Brojčin M, Popović ZV, Matović B, Bošković SB. Temperature-dependent raman study of Ce0.75Nd0.25O2-delta nanocrystals. in Applied Physics Letters. 2007;91(20).
doi:10.1063/1.2815928 .
Dohcevic-Mitrovic, Z. D., Radović, Marko B., Šćepanović, Maja, Grujić-Brojčin, Mirjana, Popović, Zoran V., Matović, Branko, Bošković, Snežana B., "Temperature-dependent raman study of Ce0.75Nd0.25O2-delta nanocrystals" in Applied Physics Letters, 91, no. 20 (2007),
https://doi.org/10.1063/1.2815928 . .
32
25
29

Raman study of Ba-doped ceria nanopowders

Radović, Marko B.; Dohcevic-Mitrovic, Z.; Šćepanović, Maja; Grujić-Brojčin, Mirjana; Matović, Branko; Bošković, Snežana B.; Popvic, Z. V.

(2007)

TY  - JOUR
AU  - Radović, Marko B.
AU  - Dohcevic-Mitrovic, Z.
AU  - Šćepanović, Maja
AU  - Grujić-Brojčin, Mirjana
AU  - Matović, Branko
AU  - Bošković, Snežana B.
AU  - Popvic, Z. V.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3382
AB  - A series of Ce1-xBaxO2-y (5 LT = x LT = 0.20) nanometric powders were synthesized by self-propagating room temperature synthesis. XRD and Raman scattering measurements were used to characterize the samples. at room temperature. All the samples are solid solutions with fluorite type structure with an average crystallite size about 5 nm. The redshift and asymmetric broadening of the Raman F g mode can be well explained with combined confinement and strain effects because of the nanocrystalline powders nature. The appearance of the additional peaks at similar to 560 cm(-1) and similar to 600 cm(-1), are attributed to extrinsic and intrinsic O2- vacancies in ceria lattice. Raman spectra of temperature treated Ce0.80Ba0.20O2-delta sample revealed the instability of this system.
T2  - Science of Sintering
T1  - Raman study of Ba-doped ceria nanopowders
VL  - 39
IS  - 3
SP  - 281
EP  - 286
DO  - 10.2298/SOS0703281R
ER  - 
@article{
author = "Radović, Marko B. and Dohcevic-Mitrovic, Z. and Šćepanović, Maja and Grujić-Brojčin, Mirjana and Matović, Branko and Bošković, Snežana B. and Popvic, Z. V.",
year = "2007",
abstract = "A series of Ce1-xBaxO2-y (5 LT = x LT = 0.20) nanometric powders were synthesized by self-propagating room temperature synthesis. XRD and Raman scattering measurements were used to characterize the samples. at room temperature. All the samples are solid solutions with fluorite type structure with an average crystallite size about 5 nm. The redshift and asymmetric broadening of the Raman F g mode can be well explained with combined confinement and strain effects because of the nanocrystalline powders nature. The appearance of the additional peaks at similar to 560 cm(-1) and similar to 600 cm(-1), are attributed to extrinsic and intrinsic O2- vacancies in ceria lattice. Raman spectra of temperature treated Ce0.80Ba0.20O2-delta sample revealed the instability of this system.",
journal = "Science of Sintering",
title = "Raman study of Ba-doped ceria nanopowders",
volume = "39",
number = "3",
pages = "281-286",
doi = "10.2298/SOS0703281R"
}
Radović, M. B., Dohcevic-Mitrovic, Z., Šćepanović, M., Grujić-Brojčin, M., Matović, B., Bošković, S. B.,& Popvic, Z. V.. (2007). Raman study of Ba-doped ceria nanopowders. in Science of Sintering, 39(3), 281-286.
https://doi.org/10.2298/SOS0703281R
Radović MB, Dohcevic-Mitrovic Z, Šćepanović M, Grujić-Brojčin M, Matović B, Bošković SB, Popvic ZV. Raman study of Ba-doped ceria nanopowders. in Science of Sintering. 2007;39(3):281-286.
doi:10.2298/SOS0703281R .
Radović, Marko B., Dohcevic-Mitrovic, Z., Šćepanović, Maja, Grujić-Brojčin, Mirjana, Matović, Branko, Bošković, Snežana B., Popvic, Z. V., "Raman study of Ba-doped ceria nanopowders" in Science of Sintering, 39, no. 3 (2007):281-286,
https://doi.org/10.2298/SOS0703281R . .
15
15
14

Surface analysis of the nanostructured W-Ti thin film deposited on silicon

Petrović, Suzana; Bundaleski, Nenad; Peruško, Davor; Radović, Marko B.; Kovač, Janez; Mitrić, Miodrag; Gaković, Biljana M.; Rakočević, Zlatko Lj.

(2007)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Bundaleski, Nenad
AU  - Peruško, Davor
AU  - Radović, Marko B.
AU  - Kovač, Janez
AU  - Mitrić, Miodrag
AU  - Gaković, Biljana M.
AU  - Rakočević, Zlatko Lj.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3189
AB  - The W-Ti thin films are deposited by the dc Ar+ sputtering of W(70%)-Ti(30%) a.t. target on silicon substrates. The surface composition and structure of the thin film, previously exposed to air, was carded out. The surface structure was undertaken using grazing incidence X-ray diffraction (GIXRD), and compared to that of the thin film interior. The surface morphology was determined by the Scanning Tunneling Microscopy (STM). The surface composition and chemical bonding of elements on the Ti-W film were analyzed by X-ray photoelectron spectroscopy (XPS) and Low Energy Ion Scattering (LEIS). The measurements show that the overlayer of metallic oxides TiO2, and WO3 is formed. The first atomic layer is occupied by TiO2 only, and its thickness is estimated to about 3.2 +/- 0.4 nm. The strong surface segregation of Ti is triggered by the surface oxidation, which is confirmed by the thermodynamical considerations. (c) 2007 Elsevier B.V All rights reserved.
T2  - Applied Surface Science
T1  - Surface analysis of the nanostructured W-Ti thin film deposited on silicon
VL  - 253
IS  - 12
SP  - 5196
EP  - 5202
DO  - 10.1016/j.apsusc.2006.10.077
ER  - 
@article{
author = "Petrović, Suzana and Bundaleski, Nenad and Peruško, Davor and Radović, Marko B. and Kovač, Janez and Mitrić, Miodrag and Gaković, Biljana M. and Rakočević, Zlatko Lj.",
year = "2007",
abstract = "The W-Ti thin films are deposited by the dc Ar+ sputtering of W(70%)-Ti(30%) a.t. target on silicon substrates. The surface composition and structure of the thin film, previously exposed to air, was carded out. The surface structure was undertaken using grazing incidence X-ray diffraction (GIXRD), and compared to that of the thin film interior. The surface morphology was determined by the Scanning Tunneling Microscopy (STM). The surface composition and chemical bonding of elements on the Ti-W film were analyzed by X-ray photoelectron spectroscopy (XPS) and Low Energy Ion Scattering (LEIS). The measurements show that the overlayer of metallic oxides TiO2, and WO3 is formed. The first atomic layer is occupied by TiO2 only, and its thickness is estimated to about 3.2 +/- 0.4 nm. The strong surface segregation of Ti is triggered by the surface oxidation, which is confirmed by the thermodynamical considerations. (c) 2007 Elsevier B.V All rights reserved.",
journal = "Applied Surface Science",
title = "Surface analysis of the nanostructured W-Ti thin film deposited on silicon",
volume = "253",
number = "12",
pages = "5196-5202",
doi = "10.1016/j.apsusc.2006.10.077"
}
Petrović, S., Bundaleski, N., Peruško, D., Radović, M. B., Kovač, J., Mitrić, M., Gaković, B. M.,& Rakočević, Z. Lj.. (2007). Surface analysis of the nanostructured W-Ti thin film deposited on silicon. in Applied Surface Science, 253(12), 5196-5202.
https://doi.org/10.1016/j.apsusc.2006.10.077
Petrović S, Bundaleski N, Peruško D, Radović MB, Kovač J, Mitrić M, Gaković BM, Rakočević ZL. Surface analysis of the nanostructured W-Ti thin film deposited on silicon. in Applied Surface Science. 2007;253(12):5196-5202.
doi:10.1016/j.apsusc.2006.10.077 .
Petrović, Suzana, Bundaleski, Nenad, Peruško, Davor, Radović, Marko B., Kovač, Janez, Mitrić, Miodrag, Gaković, Biljana M., Rakočević, Zlatko Lj., "Surface analysis of the nanostructured W-Ti thin film deposited on silicon" in Applied Surface Science, 253, no. 12 (2007):5196-5202,
https://doi.org/10.1016/j.apsusc.2006.10.077 . .
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Surface composition and structure of Ni-Cr sputtered coatings exposed in air at room temperature

Petrović, Suzana; Bundaleski, Nenad; Radović, Marko B.; Ristić, Zoran; Gligorić, Goran; Peruško, Davor; Mitrić, Miodrag; Pracek, B.; Zalar, A.; Rakočević, Zlatko Lj.

(2007)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Bundaleski, Nenad
AU  - Radović, Marko B.
AU  - Ristić, Zoran
AU  - Gligorić, Goran
AU  - Peruško, Davor
AU  - Mitrić, Miodrag
AU  - Pracek, B.
AU  - Zalar, A.
AU  - Rakočević, Zlatko Lj.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6652
AB  - Nichrome coatings have been deposited using the d.c. sputtering of the target (80% Ni-20% Cr wt.) by Ar+ ions at a working pressure of 10(-1) Pa and at room temperature. After the air exposure of samples at room temperature, their phase composition and structure was studied by X-ray diffraction, while the surface elemental composition was determined by low energy ion scattering (LEIS) and Auger electron spectroscopy (AES). AES has been also used for the bulk composition analysis. There is a significant difference between the compositions of the surface and of the bulk. Surface segregation of chromium was observed using both LEIS and AES, and it was found that the chromium concentration increases with that of oxygen adsorbed at the surface during the air exposure. The nichrome surface composition is qualitatively the same as in the case of its exposure to O-2 at room temperature, but significantly different from that of the thermally annealed nichrome to 400 degrees C in air. (c) 2006 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Surface composition and structure of Ni-Cr sputtered coatings exposed in air at room temperature
VL  - 256
IS  - 1
SP  - 368
EP  - 372
DO  - 10.1016/j.nimb.2006.12.030
ER  - 
@article{
author = "Petrović, Suzana and Bundaleski, Nenad and Radović, Marko B. and Ristić, Zoran and Gligorić, Goran and Peruško, Davor and Mitrić, Miodrag and Pracek, B. and Zalar, A. and Rakočević, Zlatko Lj.",
year = "2007",
abstract = "Nichrome coatings have been deposited using the d.c. sputtering of the target (80% Ni-20% Cr wt.) by Ar+ ions at a working pressure of 10(-1) Pa and at room temperature. After the air exposure of samples at room temperature, their phase composition and structure was studied by X-ray diffraction, while the surface elemental composition was determined by low energy ion scattering (LEIS) and Auger electron spectroscopy (AES). AES has been also used for the bulk composition analysis. There is a significant difference between the compositions of the surface and of the bulk. Surface segregation of chromium was observed using both LEIS and AES, and it was found that the chromium concentration increases with that of oxygen adsorbed at the surface during the air exposure. The nichrome surface composition is qualitatively the same as in the case of its exposure to O-2 at room temperature, but significantly different from that of the thermally annealed nichrome to 400 degrees C in air. (c) 2006 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Surface composition and structure of Ni-Cr sputtered coatings exposed in air at room temperature",
volume = "256",
number = "1",
pages = "368-372",
doi = "10.1016/j.nimb.2006.12.030"
}
Petrović, S., Bundaleski, N., Radović, M. B., Ristić, Z., Gligorić, G., Peruško, D., Mitrić, M., Pracek, B., Zalar, A.,& Rakočević, Z. Lj.. (2007). Surface composition and structure of Ni-Cr sputtered coatings exposed in air at room temperature. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 256(1), 368-372.
https://doi.org/10.1016/j.nimb.2006.12.030
Petrović S, Bundaleski N, Radović MB, Ristić Z, Gligorić G, Peruško D, Mitrić M, Pracek B, Zalar A, Rakočević ZL. Surface composition and structure of Ni-Cr sputtered coatings exposed in air at room temperature. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2007;256(1):368-372.
doi:10.1016/j.nimb.2006.12.030 .
Petrović, Suzana, Bundaleski, Nenad, Radović, Marko B., Ristić, Zoran, Gligorić, Goran, Peruško, Davor, Mitrić, Miodrag, Pracek, B., Zalar, A., Rakočević, Zlatko Lj., "Surface composition and structure of Ni-Cr sputtered coatings exposed in air at room temperature" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 256, no. 1 (2007):368-372,
https://doi.org/10.1016/j.nimb.2006.12.030 . .
5
4
8

Structure and surface composition of NiCr sputtered thin films

Petrović, Suzana; Bundaleski, Nenad; Radović, Marko B.; Ristić, Zoran; Gligorić, Goran; Peruško, Davor; Zec, Slavica

(2006)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Bundaleski, Nenad
AU  - Radović, Marko B.
AU  - Ristić, Zoran
AU  - Gligorić, Goran
AU  - Peruško, Davor
AU  - Zec, Slavica
PY  - 2006
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3099
AB  - Thin films of nichrome were deposited by d.c. sputtering of a target (80%Ni - 20%Cr w.t.) by Ar+ ions at a working pressure of 10(-1) Pa and at room temperature. The phase composition and grain size were studied by X-ray Diffraction (XRD), while the surface chemical composition was determined by Low Energy Ion Scattering (LEIS). Analysis of phase composition showed that the NiCr thin films were a solid solution of chromium in a nickel matrix with increased nickel lattice parameters. LEIS analysis showed the presence of Ni, Cr and O in the first atomic layer. There is a strong suspicion that surface passivation occurred by forming Cr2O3 oxide at the surface.
T2  - Science of Sintering
T1  - Structure and surface composition of NiCr sputtered thin films
VL  - 38
IS  - 2
SP  - 155
EP  - 160
DO  - 10.2298/SOS0602155P
ER  - 
@article{
author = "Petrović, Suzana and Bundaleski, Nenad and Radović, Marko B. and Ristić, Zoran and Gligorić, Goran and Peruško, Davor and Zec, Slavica",
year = "2006",
abstract = "Thin films of nichrome were deposited by d.c. sputtering of a target (80%Ni - 20%Cr w.t.) by Ar+ ions at a working pressure of 10(-1) Pa and at room temperature. The phase composition and grain size were studied by X-ray Diffraction (XRD), while the surface chemical composition was determined by Low Energy Ion Scattering (LEIS). Analysis of phase composition showed that the NiCr thin films were a solid solution of chromium in a nickel matrix with increased nickel lattice parameters. LEIS analysis showed the presence of Ni, Cr and O in the first atomic layer. There is a strong suspicion that surface passivation occurred by forming Cr2O3 oxide at the surface.",
journal = "Science of Sintering",
title = "Structure and surface composition of NiCr sputtered thin films",
volume = "38",
number = "2",
pages = "155-160",
doi = "10.2298/SOS0602155P"
}
Petrović, S., Bundaleski, N., Radović, M. B., Ristić, Z., Gligorić, G., Peruško, D.,& Zec, S.. (2006). Structure and surface composition of NiCr sputtered thin films. in Science of Sintering, 38(2), 155-160.
https://doi.org/10.2298/SOS0602155P
Petrović S, Bundaleski N, Radović MB, Ristić Z, Gligorić G, Peruško D, Zec S. Structure and surface composition of NiCr sputtered thin films. in Science of Sintering. 2006;38(2):155-160.
doi:10.2298/SOS0602155P .
Petrović, Suzana, Bundaleski, Nenad, Radović, Marko B., Ristić, Zoran, Gligorić, Goran, Peruško, Davor, Zec, Slavica, "Structure and surface composition of NiCr sputtered thin films" in Science of Sintering, 38, no. 2 (2006):155-160,
https://doi.org/10.2298/SOS0602155P . .
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