TY  - JOUR
AU  - Stojadinović, Bojan
AU  - Đokić, Dejan M.
AU  - Paunović, Novica
AU  - Živković, Ivica
AU  - Ćirić, Luka
AU  - Kusigerski, Vladan
AU  - Dohčević-Mitrović, Zorana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9956
AB  - We report on temperature dependence of two-phonon Raman spectra in BiFeO3 nanocrystals, above and below the Néel temperature TN using a resonant laser excitation line (λ=532 nm). Two-phonon modes exhibited anomalous frequency hardening and deviation from the anharmonic decay below TN. Such behavior strongly supported the existence of spin-two-phonon interaction, because these modes are known to be very sensitive to the antiferromagnetic ordering. Within the mean-field theory for the nearest-neighbor interaction, the linear relationship between spin–spin correlation function and observed two-phonon frequency shift below TN was obtained. This approach enabled to quantify the spin–phonon interaction by spin–phonon coupling strength for both two-phonon modes and justified the application of mean-field approach. Magnetic measurements revealed the coexistence of antiferromagnetic and weak ferromagnetic phases below TN, which were found non competitive, additionally supporting the mean-field approach from which we deduced that the two-phonon modes in BiFeO3 are correlated with antiferromagnetic ordering below TN.
T2  - Materials Science and Engineering: B
T1  - Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes
VL  - 274
SP  - 115444
DO  - 10.1016/j.mseb.2021.115444
ER  - 

@article{
author = "Stojadinović, Bojan and Đokić, Dejan M. and Paunović, Novica and Živković, Ivica and Ćirić, Luka and Kusigerski, Vladan and Dohčević-Mitrović, Zorana",
year = "2021",
abstract = "We report on temperature dependence of two-phonon Raman spectra in BiFeO3 nanocrystals, above and below the Néel temperature TN using a resonant laser excitation line (λ=532 nm). Two-phonon modes exhibited anomalous frequency hardening and deviation from the anharmonic decay below TN. Such behavior strongly supported the existence of spin-two-phonon interaction, because these modes are known to be very sensitive to the antiferromagnetic ordering. Within the mean-field theory for the nearest-neighbor interaction, the linear relationship between spin–spin correlation function and observed two-phonon frequency shift below TN was obtained. This approach enabled to quantify the spin–phonon interaction by spin–phonon coupling strength for both two-phonon modes and justified the application of mean-field approach. Magnetic measurements revealed the coexistence of antiferromagnetic and weak ferromagnetic phases below TN, which were found non competitive, additionally supporting the mean-field approach from which we deduced that the two-phonon modes in BiFeO3 are correlated with antiferromagnetic ordering below TN.",
journal = "Materials Science and Engineering: B",
title = "Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes",
volume = "274",
pages = "115444",
doi = "10.1016/j.mseb.2021.115444"
}

Stojadinović, B., Đokić, D. M., Paunović, N., Živković, I., Ćirić, L., Kusigerski, V.,& Dohčević-Mitrović, Z.. (2021). Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes. in Materials Science and Engineering: B, 274, 115444.
https://doi.org/10.1016/j.mseb.2021.115444

Stojadinović B, Đokić DM, Paunović N, Živković I, Ćirić L, Kusigerski V, Dohčević-Mitrović Z. Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes. in Materials Science and Engineering: B. 2021;274:115444.
doi:10.1016/j.mseb.2021.115444 .

Stojadinović, Bojan, Đokić, Dejan M., Paunović, Novica, Živković, Ivica, Ćirić, Luka, Kusigerski, Vladan, Dohčević-Mitrović, Zorana, "Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes" in Materials Science and Engineering: B, 274 (2021):115444,
https://doi.org/10.1016/j.mseb.2021.115444 . .

TY  - JOUR
AU  - Mitrić, Jelena
AU  - Paunović, Novica M.
AU  - Mitrić, Miodrag
AU  - Ćirković, Jovana
AU  - Gilić, Martina D.
AU  - Romčević, Maja J.
AU  - Romčević, Nebojša Ž.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9904
AB  - In this paper two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top – down approach) and Solution Combustion Synthesis (bottom – up approach). For starting structural characterization, X – Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV–Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far – Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi – phonon processes which alter the reflection spectra of bulk YVO4. The influence of Eu ions is reflected through multi – phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.
T2  - Physica E: Low-dimensional Systems and Nanostructures
T1  - Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders
VL  - 134
SP  - 114923
DO  - 10.1016/j.physe.2021.114923
ER  - 

@article{
author = "Mitrić, Jelena and Paunović, Novica M. and Mitrić, Miodrag and Ćirković, Jovana and Gilić, Martina D. and Romčević, Maja J. and Romčević, Nebojša Ž.",
year = "2021",
abstract = "In this paper two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top – down approach) and Solution Combustion Synthesis (bottom – up approach). For starting structural characterization, X – Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV–Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far – Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi – phonon processes which alter the reflection spectra of bulk YVO4. The influence of Eu ions is reflected through multi – phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.",
journal = "Physica E: Low-dimensional Systems and Nanostructures",
title = "Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders",
volume = "134",
pages = "114923",
doi = "10.1016/j.physe.2021.114923"
}

Mitrić, J., Paunović, N. M., Mitrić, M., Ćirković, J., Gilić, M. D., Romčević, M. J.,& Romčević, N. Ž.. (2021). Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders. in Physica E: Low-dimensional Systems and Nanostructures, 134, 114923.
https://doi.org/10.1016/j.physe.2021.114923

Mitrić J, Paunović NM, Mitrić M, Ćirković J, Gilić MD, Romčević MJ, Romčević NŽ. Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders. in Physica E: Low-dimensional Systems and Nanostructures. 2021;134:114923.
doi:10.1016/j.physe.2021.114923 .

Mitrić, Jelena, Paunović, Novica M., Mitrić, Miodrag, Ćirković, Jovana, Gilić, Martina D., Romčević, Maja J., Romčević, Nebojša Ž., "Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders" in Physica E: Low-dimensional Systems and Nanostructures, 134 (2021):114923,
https://doi.org/10.1016/j.physe.2021.114923 . .

TY  - JOUR
AU  - Hadžić, Branka B.
AU  - Matović, Branko
AU  - Ranđelović, Marjan S.
AU  - Kostić, Radmila
AU  - Romčević, Maja J.
AU  - Trajić, Jelena
AU  - Paunović, Novica
AU  - Romčević, Nebojša Ž.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9788
AB  - In the present work experimental study of the ZnO@ZnS core-shell nanostructure with an active layer obtained by conversion of zinc oxide powders with H2S is reported. Тhe prepared structures were characterized by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and far-infrared spectroscopy. Top surface optical phonon (TSO) in ZnO, characteristic for the cylindrical nano-objects, the surface optical phonon (SOP) mode of ZnS, and SOP modes in ZnO@ZnS core-shell nanostructure are registered. Local mode of oxygen in ZnS and gap mode of sulfur in ZnO are also registered. This result is due to the existence of an active layer in the space between ZnO core and ZnS shell, which is very important for the application of these materials as thermoelectrics. © 2020 John Wiley & Sons, Ltd.
T2  - Journal of Raman Spectroscopy
T1  - Phonons investigation of ZnO@ZnS core-shell nanostructures with active layer
VL  - 52
IS  - 3
SP  - 616
EP  - 625
DO  - 10.1002/jrs.6058
ER  - 

@article{
author = "Hadžić, Branka B. and Matović, Branko and Ranđelović, Marjan S. and Kostić, Radmila and Romčević, Maja J. and Trajić, Jelena and Paunović, Novica and Romčević, Nebojša Ž.",
year = "2021",
abstract = "In the present work experimental study of the ZnO@ZnS core-shell nanostructure with an active layer obtained by conversion of zinc oxide powders with H2S is reported. Тhe prepared structures were characterized by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and far-infrared spectroscopy. Top surface optical phonon (TSO) in ZnO, characteristic for the cylindrical nano-objects, the surface optical phonon (SOP) mode of ZnS, and SOP modes in ZnO@ZnS core-shell nanostructure are registered. Local mode of oxygen in ZnS and gap mode of sulfur in ZnO are also registered. This result is due to the existence of an active layer in the space between ZnO core and ZnS shell, which is very important for the application of these materials as thermoelectrics. © 2020 John Wiley & Sons, Ltd.",
journal = "Journal of Raman Spectroscopy",
title = "Phonons investigation of ZnO@ZnS core-shell nanostructures with active layer",
volume = "52",
number = "3",
pages = "616-625",
doi = "10.1002/jrs.6058"
}

Hadžić, B. B., Matović, B., Ranđelović, M. S., Kostić, R., Romčević, M. J., Trajić, J., Paunović, N.,& Romčević, N. Ž.. (2021). Phonons investigation of ZnO@ZnS core-shell nanostructures with active layer. in Journal of Raman Spectroscopy, 52(3), 616-625.
https://doi.org/10.1002/jrs.6058

Hadžić BB, Matović B, Ranđelović MS, Kostić R, Romčević MJ, Trajić J, Paunović N, Romčević NŽ. Phonons investigation of ZnO@ZnS core-shell nanostructures with active layer. in Journal of Raman Spectroscopy. 2021;52(3):616-625.
doi:10.1002/jrs.6058 .

Hadžić, Branka B., Matović, Branko, Ranđelović, Marjan S., Kostić, Radmila, Romčević, Maja J., Trajić, Jelena, Paunović, Novica, Romčević, Nebojša Ž., "Phonons investigation of ZnO@ZnS core-shell nanostructures with active layer" in Journal of Raman Spectroscopy, 52, no. 3 (2021):616-625,
https://doi.org/10.1002/jrs.6058 . .

TY  - JOUR
AU  - Lazarević, Zorica Ž.
AU  - Križan, Gregor
AU  - Križan, Janez
AU  - Mitrić, Miodrag
AU  - Paunović, Novica M.
AU  - Milutinović, Aleksandra N.
AU  - Romčević, Nebojša Ž.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8437
AB  - Lithium iron phosphate (LiFePO4) are synthesized in complete and incomplete combustion and calcined at 700°C. The obtained samples were characterized by XRD, IR spectroscopy and magnetic measurement. Morphology of samples was controlled by SEM. The aim of this work is to show that it is possible to achieve a desired crystal phase by pulse combustion in a relatively cheap and fast way. The extremely rapid synthesis of almost pure phase material is possible due to the reduction in size of interacting particles and to an enormous number of collisions between them as a result of the strong turbulent flow associated with explosive combustion. © 2019 Optoelectronics and Advanced Materials, Rapid Communications. All rights reserved.
T2  - Optoelectronics and Advanced Materials, Rapid Communications
T1  - Synthesis and spectroscopic characterisation of LiFePO4 cathode materials
VL  - 13
IS  - 3-4
SP  - 228
EP  - 234
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8437
ER  - 

@article{
author = "Lazarević, Zorica Ž. and Križan, Gregor and Križan, Janez and Mitrić, Miodrag and Paunović, Novica M. and Milutinović, Aleksandra N. and Romčević, Nebojša Ž.",
year = "2019",
abstract = "Lithium iron phosphate (LiFePO4) are synthesized in complete and incomplete combustion and calcined at 700°C. The obtained samples were characterized by XRD, IR spectroscopy and magnetic measurement. Morphology of samples was controlled by SEM. The aim of this work is to show that it is possible to achieve a desired crystal phase by pulse combustion in a relatively cheap and fast way. The extremely rapid synthesis of almost pure phase material is possible due to the reduction in size of interacting particles and to an enormous number of collisions between them as a result of the strong turbulent flow associated with explosive combustion. © 2019 Optoelectronics and Advanced Materials, Rapid Communications. All rights reserved.",
journal = "Optoelectronics and Advanced Materials, Rapid Communications",
title = "Synthesis and spectroscopic characterisation of LiFePO4 cathode materials",
volume = "13",
number = "3-4",
pages = "228-234",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8437"
}

Lazarević, Z. Ž., Križan, G., Križan, J., Mitrić, M., Paunović, N. M., Milutinović, A. N.,& Romčević, N. Ž.. (2019). Synthesis and spectroscopic characterisation of LiFePO4 cathode materials. in Optoelectronics and Advanced Materials, Rapid Communications, 13(3-4), 228-234.
https://hdl.handle.net/21.15107/rcub_vinar_8437

Lazarević ZŽ, Križan G, Križan J, Mitrić M, Paunović NM, Milutinović AN, Romčević NŽ. Synthesis and spectroscopic characterisation of LiFePO4 cathode materials. in Optoelectronics and Advanced Materials, Rapid Communications. 2019;13(3-4):228-234.
https://hdl.handle.net/21.15107/rcub_vinar_8437 .

Lazarević, Zorica Ž., Križan, Gregor, Križan, Janez, Mitrić, Miodrag, Paunović, Novica M., Milutinović, Aleksandra N., Romčević, Nebojša Ž., "Synthesis and spectroscopic characterisation of LiFePO4 cathode materials" in Optoelectronics and Advanced Materials, Rapid Communications, 13, no. 3-4 (2019):228-234,
https://hdl.handle.net/21.15107/rcub_vinar_8437 .

TY  - JOUR
AU  - Mitrić, Jelena
AU  - Paunović, Novica M.
AU  - Mitrić, Miodrag
AU  - Vasić, Borislav Z.
AU  - Ralević, Uroš
AU  - Trajić, Jelena
AU  - Romčević, Maja J.
AU  - Dobrowolski, Witold D.
AU  - Yahia, Ibrahim S.
AU  - Romčević, Nebojša Ž.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7808
AB  - Structural and optical properties of CdTe thin films were investigated applying atomic force microscopy (AFM), XRD powder technique, Raman spectroscopy and far–infrared spectroscopy. CdTe thin films were prepared by using thermal evaporation technique. In the analysis of the far – infrared reflection spectra, numerical model for calculating the reflectivity coefficient for system which includes films and substrate has been applied. Effective permittivity of film mixture (CdTe and air) was modeled by Maxwell – Garnet approximation. We reveal the existence of surface optical phonon (SOP) mode and coupled plasmon-SOP modes (CPSOPM). © 2018 Elsevier B.V.
T2  - Physica E: Low-dimensional Systems and Nanostructures
T1  - Surface optical phonon – Plasmon interaction in nanodimensional CdTe thin films
VL  - 104
SP  - 64
EP  - 70
DO  - 10.1016/j.physe.2018.07.021
ER  - 

@article{
author = "Mitrić, Jelena and Paunović, Novica M. and Mitrić, Miodrag and Vasić, Borislav Z. and Ralević, Uroš and Trajić, Jelena and Romčević, Maja J. and Dobrowolski, Witold D. and Yahia, Ibrahim S. and Romčević, Nebojša Ž.",
year = "2018",
abstract = "Structural and optical properties of CdTe thin films were investigated applying atomic force microscopy (AFM), XRD powder technique, Raman spectroscopy and far–infrared spectroscopy. CdTe thin films were prepared by using thermal evaporation technique. In the analysis of the far – infrared reflection spectra, numerical model for calculating the reflectivity coefficient for system which includes films and substrate has been applied. Effective permittivity of film mixture (CdTe and air) was modeled by Maxwell – Garnet approximation. We reveal the existence of surface optical phonon (SOP) mode and coupled plasmon-SOP modes (CPSOPM). © 2018 Elsevier B.V.",
journal = "Physica E: Low-dimensional Systems and Nanostructures",
title = "Surface optical phonon – Plasmon interaction in nanodimensional CdTe thin films",
volume = "104",
pages = "64-70",
doi = "10.1016/j.physe.2018.07.021"
}

Mitrić, J., Paunović, N. M., Mitrić, M., Vasić, B. Z., Ralević, U., Trajić, J., Romčević, M. J., Dobrowolski, W. D., Yahia, I. S.,& Romčević, N. Ž.. (2018). Surface optical phonon – Plasmon interaction in nanodimensional CdTe thin films. in Physica E: Low-dimensional Systems and Nanostructures, 104, 64-70.
https://doi.org/10.1016/j.physe.2018.07.021

Mitrić J, Paunović NM, Mitrić M, Vasić BZ, Ralević U, Trajić J, Romčević MJ, Dobrowolski WD, Yahia IS, Romčević NŽ. Surface optical phonon – Plasmon interaction in nanodimensional CdTe thin films. in Physica E: Low-dimensional Systems and Nanostructures. 2018;104:64-70.
doi:10.1016/j.physe.2018.07.021 .

Mitrić, Jelena, Paunović, Novica M., Mitrić, Miodrag, Vasić, Borislav Z., Ralević, Uroš, Trajić, Jelena, Romčević, Maja J., Dobrowolski, Witold D., Yahia, Ibrahim S., Romčević, Nebojša Ž., "Surface optical phonon – Plasmon interaction in nanodimensional CdTe thin films" in Physica E: Low-dimensional Systems and Nanostructures, 104 (2018):64-70,
https://doi.org/10.1016/j.physe.2018.07.021 . .

TY  - JOUR
AU  - Rosić, Milena
AU  - Zagorac, Dejan
AU  - Milivojević, Dušan
AU  - Paunović, Novica M.
AU  - Zagorac, Jelena B.
AU  - Dohčević-Mitrović, Zorana
AU  - Matović, Branko
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1077
AB  - In order to estimate theoretical stability of the perovskite structure for synthesized Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) nanopowders, the Goldschmidt tolerance factor G(t) and global instability index GII were calculated. Furthermore, we have performed structure prediction of Ca1-xGdxMnO3 perovskites and found several possible perovskite-related phases. The influence of gadolinium amount on MneO bond angles and distances, tilting of MnO6 octahedra around all three axes and deformation due to the presence of the Jahn-Teller distortion around Mn3+ cation, as well as the influence of the amount of Mn3+ cation on Ca1-xGdxMnO3 compound, was examined. Ion Mn valence states were determined by bond valence calculations (BVC). Infrared active phonon modes in Ca1-xGdxMnO3 were studied by infrared reflection spectroscopy and magnetic properties were studied by using EPR (electron paramagnetic resonance) measurements. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders
VL  - 678
SP  - 219
EP  - 227
DO  - 10.1016/j.jallcom.2016.03.173
ER  - 

@article{
author = "Rosić, Milena and Zagorac, Dejan and Milivojević, Dušan and Paunović, Novica M. and Zagorac, Jelena B. and Dohčević-Mitrović, Zorana and Matović, Branko",
year = "2016",
abstract = "In order to estimate theoretical stability of the perovskite structure for synthesized Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) nanopowders, the Goldschmidt tolerance factor G(t) and global instability index GII were calculated. Furthermore, we have performed structure prediction of Ca1-xGdxMnO3 perovskites and found several possible perovskite-related phases. The influence of gadolinium amount on MneO bond angles and distances, tilting of MnO6 octahedra around all three axes and deformation due to the presence of the Jahn-Teller distortion around Mn3+ cation, as well as the influence of the amount of Mn3+ cation on Ca1-xGdxMnO3 compound, was examined. Ion Mn valence states were determined by bond valence calculations (BVC). Infrared active phonon modes in Ca1-xGdxMnO3 were studied by infrared reflection spectroscopy and magnetic properties were studied by using EPR (electron paramagnetic resonance) measurements. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders",
volume = "678",
pages = "219-227",
doi = "10.1016/j.jallcom.2016.03.173"
}

Rosić, M., Zagorac, D., Milivojević, D., Paunović, N. M., Zagorac, J. B., Dohčević-Mitrović, Z.,& Matović, B.. (2016). Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders. in Journal of Alloys and Compounds, 678, 219-227.
https://doi.org/10.1016/j.jallcom.2016.03.173

Rosić M, Zagorac D, Milivojević D, Paunović NM, Zagorac JB, Dohčević-Mitrović Z, Matović B. Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders. in Journal of Alloys and Compounds. 2016;678:219-227.
doi:10.1016/j.jallcom.2016.03.173 .

Rosić, Milena, Zagorac, Dejan, Milivojević, Dušan, Paunović, Novica M., Zagorac, Jelena B., Dohčević-Mitrović, Zorana, Matović, Branko, "Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders" in Journal of Alloys and Compounds, 678 (2016):219-227,
https://doi.org/10.1016/j.jallcom.2016.03.173 . .

TY  - JOUR
AU  - Dohčević-Mitrović, Zorana 
AU  - Stojadinovic, Stevan
AU  - Lozzi, Luca
AU  - Aškrabić, Sonja
AU  - Rosić, Milena
AU  - Tomić, Nataša
AU  - Paunović, Novica M.
AU  - Lazović, Saša
AU  - Nikolić, Marko G.
AU  - Santucci, Sandro
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1234
AB  - WO3/TiO2 and TiO2 coatings were prepared on titania substrates using facile and cost-effective plasma electrolytic oxidation process. The coatings were characterized by X-ray diffraction, scanning electron microscopy, Raman, UV vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. With increasing duration of PEO process, the monoclinic WO3 phase became dominant and new monoclinic WO2.95 phase appeared. The optical absorption edge in the WO3/TiO2 samples, enriched with WO3/WO2.96 phase, was shifted to the visible region. The photocatalytic efficiency of WO3/TiO2 and pure TiO2 samples was evaluated by performing the photodegradation experiments in an aqueous solution of Rhodamine 6G and Mordant Blue 9 under the visible and UV light. The WO3/TiO2 catalysts are much more efficient than pure TiO2 under visible light and slightly better under UV light. The improvement of photocatalytic activity in the visible region is attributed to better light absorption, higher adsorption affinity and increased charge separation efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties
VL  - 83
SP  - 217
EP  - 224
DO  - 10.1016/j.materresbull.2016.06.011
ER  - 

@article{
author = "Dohčević-Mitrović, Zorana  and Stojadinovic, Stevan and Lozzi, Luca and Aškrabić, Sonja and Rosić, Milena and Tomić, Nataša and Paunović, Novica M. and Lazović, Saša and Nikolić, Marko G. and Santucci, Sandro",
year = "2016",
abstract = "WO3/TiO2 and TiO2 coatings were prepared on titania substrates using facile and cost-effective plasma electrolytic oxidation process. The coatings were characterized by X-ray diffraction, scanning electron microscopy, Raman, UV vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. With increasing duration of PEO process, the monoclinic WO3 phase became dominant and new monoclinic WO2.95 phase appeared. The optical absorption edge in the WO3/TiO2 samples, enriched with WO3/WO2.96 phase, was shifted to the visible region. The photocatalytic efficiency of WO3/TiO2 and pure TiO2 samples was evaluated by performing the photodegradation experiments in an aqueous solution of Rhodamine 6G and Mordant Blue 9 under the visible and UV light. The WO3/TiO2 catalysts are much more efficient than pure TiO2 under visible light and slightly better under UV light. The improvement of photocatalytic activity in the visible region is attributed to better light absorption, higher adsorption affinity and increased charge separation efficiency. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties",
volume = "83",
pages = "217-224",
doi = "10.1016/j.materresbull.2016.06.011"
}

Dohčević-Mitrović, Z., Stojadinovic, S., Lozzi, L., Aškrabić, S., Rosić, M., Tomić, N., Paunović, N. M., Lazović, S., Nikolić, M. G.,& Santucci, S.. (2016). WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties. in Materials Research Bulletin, 83, 217-224.
https://doi.org/10.1016/j.materresbull.2016.06.011

Dohčević-Mitrović Z, Stojadinovic S, Lozzi L, Aškrabić S, Rosić M, Tomić N, Paunović NM, Lazović S, Nikolić MG, Santucci S. WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties. in Materials Research Bulletin. 2016;83:217-224.
doi:10.1016/j.materresbull.2016.06.011 .

Dohčević-Mitrović, Zorana , Stojadinovic, Stevan, Lozzi, Luca, Aškrabić, Sonja, Rosić, Milena, Tomić, Nataša, Paunović, Novica M., Lazović, Saša, Nikolić, Marko G., Santucci, Sandro, "WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties" in Materials Research Bulletin, 83 (2016):217-224,
https://doi.org/10.1016/j.materresbull.2016.06.011 . .

TY  - JOUR
AU  - Radisavljević, Ivana
AU  - Novaković, Nikola
AU  - Matović, Branko
AU  - Paunović, Novica M.
AU  - Medić, Mirjana
AU  - Bundaleski, Nenad
AU  - Andrić, Velibor
AU  - Teodoro, Orlando M. N. D.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/881
AB  - X-ray absorption (XANES, EXAFS, XMCD) and photoelectron (XPS) spectroscopic techniques were employed to study local structural, electronic and magnetic properties of Zn0.95Co0.05O nanopowders. The substitutional Co2+ ions are incorporated in ZnO lattice at regular Zn sites and the sample is characterized by high structural order. There was no sign of ferromagnetic ordering of Co magnetic moments and the sample is in paramagnetic state at all temperatures down to 5 K. The possible connection of the structural defects with the absence of ferromagnetism is discussed on the basis of theoretical calculations of the O K-edge absorption spectra. (C) 2015 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Materials Research Bulletin
T1  - Comprehensive studies of structural, electronic and magnetic properties of Zn(0.9)5Co(0.05)O nanopowders
VL  - 74
SP  - 78
EP  - 84
DO  - 10.1016/j.materresbull.2015.10.014
ER  - 

@article{
author = "Radisavljević, Ivana and Novaković, Nikola and Matović, Branko and Paunović, Novica M. and Medić, Mirjana and Bundaleski, Nenad and Andrić, Velibor and Teodoro, Orlando M. N. D.",
year = "2016",
abstract = "X-ray absorption (XANES, EXAFS, XMCD) and photoelectron (XPS) spectroscopic techniques were employed to study local structural, electronic and magnetic properties of Zn0.95Co0.05O nanopowders. The substitutional Co2+ ions are incorporated in ZnO lattice at regular Zn sites and the sample is characterized by high structural order. There was no sign of ferromagnetic ordering of Co magnetic moments and the sample is in paramagnetic state at all temperatures down to 5 K. The possible connection of the structural defects with the absence of ferromagnetism is discussed on the basis of theoretical calculations of the O K-edge absorption spectra. (C) 2015 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Research Bulletin",
title = "Comprehensive studies of structural, electronic and magnetic properties of Zn(0.9)5Co(0.05)O nanopowders",
volume = "74",
pages = "78-84",
doi = "10.1016/j.materresbull.2015.10.014"
}

Radisavljević, I., Novaković, N., Matović, B., Paunović, N. M., Medić, M., Bundaleski, N., Andrić, V.,& Teodoro, O. M. N. D.. (2016). Comprehensive studies of structural, electronic and magnetic properties of Zn(0.9)5Co(0.05)O nanopowders. in Materials Research Bulletin
Elsevier., 74, 78-84.
https://doi.org/10.1016/j.materresbull.2015.10.014

Radisavljević I, Novaković N, Matović B, Paunović NM, Medić M, Bundaleski N, Andrić V, Teodoro OMND. Comprehensive studies of structural, electronic and magnetic properties of Zn(0.9)5Co(0.05)O nanopowders. in Materials Research Bulletin. 2016;74:78-84.
doi:10.1016/j.materresbull.2015.10.014 .

Radisavljević, Ivana, Novaković, Nikola, Matović, Branko, Paunović, Novica M., Medić, Mirjana, Bundaleski, Nenad, Andrić, Velibor, Teodoro, Orlando M. N. D., "Comprehensive studies of structural, electronic and magnetic properties of Zn(0.9)5Co(0.05)O nanopowders" in Materials Research Bulletin, 74 (2016):78-84,
https://doi.org/10.1016/j.materresbull.2015.10.014 . .

TY  - JOUR
AU  - Trajić, Jelena
AU  - Rabasović, Maja S.
AU  - Savić-Šević, Svetlana N.
AU  - Šević, Dragutin M.
AU  - Babić, Biljana M.
AU  - Romčević, Maja J.
AU  - Ristić-Đurović, Jasna L.
AU  - Paunović, Novica M.
AU  - Križan, Janez
AU  - Romčević, Nebojša Ž.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1210
AB  - The solution combustion synthesis was used to prepare nanopowders of yttrium aluminum garnet (YAG) and YAG doped with dysprosium ions, Dy3+, (YAG:Dy). The morphology, specific surface area, texture, and optical properties of the prepared materials were studied by the means of scanning electron microscopy (SEM), nitrogen adsorption method, and far-infrared spectroscopy at room temperature in the spectral region between 80 and 600 cm(-1). It was established that all the examined samples were microporous. The Maxwell-Garnet formula was used to model dielectric function of YAG and YAG:Dy nanopowders as mixtures of homogenous spherical inclusions in air. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Infrared Physics and Technology
T1  - Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder
VL  - 77
SP  - 226
EP  - 229
DO  - 10.1016/j.infrared.2016.06.003
ER  - 

@article{
author = "Trajić, Jelena and Rabasović, Maja S. and Savić-Šević, Svetlana N. and Šević, Dragutin M. and Babić, Biljana M. and Romčević, Maja J. and Ristić-Đurović, Jasna L. and Paunović, Novica M. and Križan, Janez and Romčević, Nebojša Ž.",
year = "2016",
abstract = "The solution combustion synthesis was used to prepare nanopowders of yttrium aluminum garnet (YAG) and YAG doped with dysprosium ions, Dy3+, (YAG:Dy). The morphology, specific surface area, texture, and optical properties of the prepared materials were studied by the means of scanning electron microscopy (SEM), nitrogen adsorption method, and far-infrared spectroscopy at room temperature in the spectral region between 80 and 600 cm(-1). It was established that all the examined samples were microporous. The Maxwell-Garnet formula was used to model dielectric function of YAG and YAG:Dy nanopowders as mixtures of homogenous spherical inclusions in air. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Infrared Physics and Technology",
title = "Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder",
volume = "77",
pages = "226-229",
doi = "10.1016/j.infrared.2016.06.003"
}

Trajić, J., Rabasović, M. S., Savić-Šević, S. N., Šević, D. M., Babić, B. M., Romčević, M. J., Ristić-Đurović, J. L., Paunović, N. M., Križan, J.,& Romčević, N. Ž.. (2016). Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder. in Infrared Physics and Technology, 77, 226-229.
https://doi.org/10.1016/j.infrared.2016.06.003

Trajić J, Rabasović MS, Savić-Šević SN, Šević DM, Babić BM, Romčević MJ, Ristić-Đurović JL, Paunović NM, Križan J, Romčević NŽ. Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder. in Infrared Physics and Technology. 2016;77:226-229.
doi:10.1016/j.infrared.2016.06.003 .

Trajić, Jelena, Rabasović, Maja S., Savić-Šević, Svetlana N., Šević, Dragutin M., Babić, Biljana M., Romčević, Maja J., Ristić-Đurović, Jasna L., Paunović, Novica M., Križan, Janez, Romčević, Nebojša Ž., "Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder" in Infrared Physics and Technology, 77 (2016):226-229,
https://doi.org/10.1016/j.infrared.2016.06.003 . .

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  - https://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 . .

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  - https://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 . .

TY  - JOUR
AU  - Tomić, Nataša
AU  - Dohčević-Mitrović, Zorana
AU  - Paunović, Novica M.
AU  - Mijin, Dušan Ž.
AU  - Radić, Nenad D.
AU  - Grbic, Bosko V.
AU  - Aškrabić, Sonja
AU  - Babić, Biljana M.
AU  - Bajuk-Bogdanović, Danica V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9685
AB  - Ultrafine CeO2-delta nanopowder, prepared by a simple and cost-effective self-propagating room temperature synthesis method (SPRT), showed high adsorption capability for removal of different azo dyes. Batch type of adsorption experiments with fixed initial pH value were conducted for the removal of Reactive Orange 16 (RO16), Methyl Orange (MO), and Mordant Blue 9 (MB9). The equilibrium adsorption data were evaluated using Freundlich and Langmuir isotherm models. The Langmuir model slightly better describes isotherm data for RO16 and MO, whereas the Freundlich model was found to best fit the isotherm data for MB9 over the whole concentration range. The maximum adsorption capacities, determined from isotherm data for MO, MB9, and RO16 were 113, 101, and 91 mg g(1) respectively. The adsorption process follows the pseudo-second-order kinetic model indicating the coexistence of chemisorption and physisorption. The mechanism of azo dye adsorption is also discussed.
T2  - Langmuir
T1  - Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes
VL  - 30
IS  - 39
SP  - 11582
EP  - 11590
DO  - 10.1021/la502969w
ER  - 

@article{
author = "Tomić, Nataša and Dohčević-Mitrović, Zorana and Paunović, Novica M. and Mijin, Dušan Ž. and Radić, Nenad D. and Grbic, Bosko V. and Aškrabić, Sonja and Babić, Biljana M. and Bajuk-Bogdanović, Danica V.",
year = "2014",
abstract = "Ultrafine CeO2-delta nanopowder, prepared by a simple and cost-effective self-propagating room temperature synthesis method (SPRT), showed high adsorption capability for removal of different azo dyes. Batch type of adsorption experiments with fixed initial pH value were conducted for the removal of Reactive Orange 16 (RO16), Methyl Orange (MO), and Mordant Blue 9 (MB9). The equilibrium adsorption data were evaluated using Freundlich and Langmuir isotherm models. The Langmuir model slightly better describes isotherm data for RO16 and MO, whereas the Freundlich model was found to best fit the isotherm data for MB9 over the whole concentration range. The maximum adsorption capacities, determined from isotherm data for MO, MB9, and RO16 were 113, 101, and 91 mg g(1) respectively. The adsorption process follows the pseudo-second-order kinetic model indicating the coexistence of chemisorption and physisorption. The mechanism of azo dye adsorption is also discussed.",
journal = "Langmuir",
title = "Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes",
volume = "30",
number = "39",
pages = "11582-11590",
doi = "10.1021/la502969w"
}

Tomić, N., Dohčević-Mitrović, Z., Paunović, N. M., Mijin, D. Ž., Radić, N. D., Grbic, B. V., Aškrabić, S., Babić, B. M.,& Bajuk-Bogdanović, D. V.. (2014). Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes. in Langmuir, 30(39), 11582-11590.
https://doi.org/10.1021/la502969w

Tomić N, Dohčević-Mitrović Z, Paunović NM, Mijin DŽ, Radić ND, Grbic BV, Aškrabić S, Babić BM, Bajuk-Bogdanović DV. Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes. in Langmuir. 2014;30(39):11582-11590.
doi:10.1021/la502969w .

Tomić, Nataša, Dohčević-Mitrović, Zorana, Paunović, Novica M., Mijin, Dušan Ž., Radić, Nenad D., Grbic, Bosko V., Aškrabić, Sonja, Babić, Biljana M., Bajuk-Bogdanović, Danica V., "Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes" in Langmuir, 30, no. 39 (2014):11582-11590,
https://doi.org/10.1021/la502969w . .

TY  - JOUR
AU  - Tomić, Nataša
AU  - Dohčević-Mitrović, Zorana
AU  - Paunović, Novica M.
AU  - Mijin, Dušan Ž.
AU  - Radić, Nenad D.
AU  - Grbic, Bosko V.
AU  - Aškrabić, Sonja
AU  - Babić, Biljana M.
AU  - Bajuk-Bogdanović, Danica V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/156
AB  - Ultrafine CeO2-delta nanopowder, prepared by a simple and cost-effective self-propagating room temperature synthesis method (SPRT), showed high adsorption capability for removal of different azo dyes. Batch type of adsorption experiments with fixed initial pH value were conducted for the removal of Reactive Orange 16 (RO16), Methyl Orange (MO), and Mordant Blue 9 (MB9). The equilibrium adsorption data were evaluated using Freundlich and Langmuir isotherm models. The Langmuir model slightly better describes isotherm data for RO16 and MO, whereas the Freundlich model was found to best fit the isotherm data for MB9 over the whole concentration range. The maximum adsorption capacities, determined from isotherm data for MO, MB9, and RO16 were 113, 101, and 91 mg g(1) respectively. The adsorption process follows the pseudo-second-order kinetic model indicating the coexistence of chemisorption and physisorption. The mechanism of azo dye adsorption is also discussed.
T2  - Langmuir
T1  - Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes
VL  - 30
IS  - 39
SP  - 11582
EP  - 11590
DO  - 10.1021/la502969w
ER  - 

@article{
author = "Tomić, Nataša and Dohčević-Mitrović, Zorana and Paunović, Novica M. and Mijin, Dušan Ž. and Radić, Nenad D. and Grbic, Bosko V. and Aškrabić, Sonja and Babić, Biljana M. and Bajuk-Bogdanović, Danica V.",
year = "2014",
abstract = "Ultrafine CeO2-delta nanopowder, prepared by a simple and cost-effective self-propagating room temperature synthesis method (SPRT), showed high adsorption capability for removal of different azo dyes. Batch type of adsorption experiments with fixed initial pH value were conducted for the removal of Reactive Orange 16 (RO16), Methyl Orange (MO), and Mordant Blue 9 (MB9). The equilibrium adsorption data were evaluated using Freundlich and Langmuir isotherm models. The Langmuir model slightly better describes isotherm data for RO16 and MO, whereas the Freundlich model was found to best fit the isotherm data for MB9 over the whole concentration range. The maximum adsorption capacities, determined from isotherm data for MO, MB9, and RO16 were 113, 101, and 91 mg g(1) respectively. The adsorption process follows the pseudo-second-order kinetic model indicating the coexistence of chemisorption and physisorption. The mechanism of azo dye adsorption is also discussed.",
journal = "Langmuir",
title = "Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes",
volume = "30",
number = "39",
pages = "11582-11590",
doi = "10.1021/la502969w"
}

Tomić, N., Dohčević-Mitrović, Z., Paunović, N. M., Mijin, D. Ž., Radić, N. D., Grbic, B. V., Aškrabić, S., Babić, B. M.,& Bajuk-Bogdanović, D. V.. (2014). Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes. in Langmuir, 30(39), 11582-11590.
https://doi.org/10.1021/la502969w

Tomić N, Dohčević-Mitrović Z, Paunović NM, Mijin DŽ, Radić ND, Grbic BV, Aškrabić S, Babić BM, Bajuk-Bogdanović DV. Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes. in Langmuir. 2014;30(39):11582-11590.
doi:10.1021/la502969w .

Tomić, Nataša, Dohčević-Mitrović, Zorana, Paunović, Novica M., Mijin, Dušan Ž., Radić, Nenad D., Grbic, Bosko V., Aškrabić, Sonja, Babić, Biljana M., Bajuk-Bogdanović, Danica V., "Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes" in Langmuir, 30, no. 39 (2014):11582-11590,
https://doi.org/10.1021/la502969w . .

TY  - JOUR
AU  - Paunović, Novica M.
AU  - Dohčević-Mitrović, Zorana 
AU  - Scurtu, Rares
AU  - Aškrabić, Sonja
AU  - Prekajski, Marija D.
AU  - Matović, Branko
AU  - Popović, Zoran V.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4992
AB  - Ce1-xPrxO2-delta (0 LT = x LT = 0.4) nanocrystals were synthesized by self-propagating method and thoroughly characterized using X-ray diffraction, Raman and X-ray photoelectron spectroscopy and magnetic measurements. Undoped CeO2 nanocrystals exhibited intrinsic ferromagnetism at room temperature. Despite the increased concentration of oxygen vacancies in doped samples, our results showed that ferromagnetic ordering rapidly degrades with Pr doping. The suppression of ferromagnetism can be explained in terms of the different dopant valence state, the different nature of the vacancies formed in Pr-doped samples and their ability/disability to establish the ferromagnetic ordering.
T2  - Nanoscale
T1  - Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals
VL  - 4
IS  - 17
SP  - 5469
EP  - 5476
DO  - 10.1039/c2nr30799e
ER  - 

@article{
author = "Paunović, Novica M. and Dohčević-Mitrović, Zorana  and Scurtu, Rares and Aškrabić, Sonja and Prekajski, Marija D. and Matović, Branko and Popović, Zoran V.",
year = "2012",
abstract = "Ce1-xPrxO2-delta (0 LT = x LT = 0.4) nanocrystals were synthesized by self-propagating method and thoroughly characterized using X-ray diffraction, Raman and X-ray photoelectron spectroscopy and magnetic measurements. Undoped CeO2 nanocrystals exhibited intrinsic ferromagnetism at room temperature. Despite the increased concentration of oxygen vacancies in doped samples, our results showed that ferromagnetic ordering rapidly degrades with Pr doping. The suppression of ferromagnetism can be explained in terms of the different dopant valence state, the different nature of the vacancies formed in Pr-doped samples and their ability/disability to establish the ferromagnetic ordering.",
journal = "Nanoscale",
title = "Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals",
volume = "4",
number = "17",
pages = "5469-5476",
doi = "10.1039/c2nr30799e"
}

Paunović, N. M., Dohčević-Mitrović, Z., Scurtu, R., Aškrabić, S., Prekajski, M. D., Matović, B.,& Popović, Z. V.. (2012). Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals. in Nanoscale, 4(17), 5469-5476.
https://doi.org/10.1039/c2nr30799e

Paunović NM, Dohčević-Mitrović Z, Scurtu R, Aškrabić S, Prekajski MD, Matović B, Popović ZV. Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals. in Nanoscale. 2012;4(17):5469-5476.
doi:10.1039/c2nr30799e .

Paunović, Novica M., Dohčević-Mitrović, Zorana , Scurtu, Rares, Aškrabić, Sonja, Prekajski, Marija D., Matović, Branko, Popović, Zoran V., "Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals" in Nanoscale, 4, no. 17 (2012):5469-5476,
https://doi.org/10.1039/c2nr30799e . .

TY  - CONF
AU  - Novaković, Nikola
AU  - Radisavljević, Ivana
AU  - Paskaš Mamula, Bojana
AU  - Medić, Mirjana
AU  - Matović, Branko
AU  - Paunović, Novica M.
AU  - Ivanović, Nenad
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6977
AB  - Nanosized powder of ZnO doped with 5 at% of Fe was prepared and characterized by X ray diffractometry, while local atomic arrangements around different absorbing atoms was characterized by EXAFS measurements. Also, existence of significant magnetic moments of absorbant atoms was investigated using XMCD technique, while overall magnetic properties were sampled by magnetometric measurements. To get better insight in mechanisms behind such a subtle effect, ab initio calculations of electronic structure of dopped system has also been performed. Although, calculations predict small magnetic moments on Fe and to small extent on neighbouring atoms, XMCD and magnetic measurements reveal no sign of magnetic ordering in this compound, proving once more the decisive role of preparation technique in obtaining the desired effect.
T1  - Structural Investigation of Zno:Fe Doped System
SP  - 209
EP  - 212
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6977
ER  - 

@conference{
author = "Novaković, Nikola and Radisavljević, Ivana and Paskaš Mamula, Bojana and Medić, Mirjana and Matović, Branko and Paunović, Novica M. and Ivanović, Nenad",
year = "2012",
abstract = "Nanosized powder of ZnO doped with 5 at% of Fe was prepared and characterized by X ray diffractometry, while local atomic arrangements around different absorbing atoms was characterized by EXAFS measurements. Also, existence of significant magnetic moments of absorbant atoms was investigated using XMCD technique, while overall magnetic properties were sampled by magnetometric measurements. To get better insight in mechanisms behind such a subtle effect, ab initio calculations of electronic structure of dopped system has also been performed. Although, calculations predict small magnetic moments on Fe and to small extent on neighbouring atoms, XMCD and magnetic measurements reveal no sign of magnetic ordering in this compound, proving once more the decisive role of preparation technique in obtaining the desired effect.",
title = "Structural Investigation of Zno:Fe Doped System",
pages = "209-212",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6977"
}

Novaković, N., Radisavljević, I., Paskaš Mamula, B., Medić, M., Matović, B., Paunović, N. M.,& Ivanović, N.. (2012). Structural Investigation of Zno:Fe Doped System. , 209-212.
https://hdl.handle.net/21.15107/rcub_vinar_6977

Novaković N, Radisavljević I, Paskaš Mamula B, Medić M, Matović B, Paunović NM, Ivanović N. Structural Investigation of Zno:Fe Doped System. 2012;:209-212.
https://hdl.handle.net/21.15107/rcub_vinar_6977 .

Novaković, Nikola, Radisavljević, Ivana, Paskaš Mamula, Bojana, Medić, Mirjana, Matović, Branko, Paunović, Novica M., Ivanović, Nenad, "Structural Investigation of Zno:Fe Doped System" (2012):209-212,
https://hdl.handle.net/21.15107/rcub_vinar_6977 .

TY  - JOUR
AU  - Lazarević, Zorica Ž.
AU  - Jovalekić, Čedomir
AU  - Recnik, A.
AU  - Ivanovski, Valentin N.
AU  - Mitrić, Miodrag
AU  - Romčević, Maja J.
AU  - Paunović, Novica M.
AU  - Cekić, Božidar Đ.
AU  - Romčević, Nebojša Ž.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4525
AB  - Manganese ferrite, MnFe2O4 have been prepared by a soft mechanochemical route from mixture of (a) Mn(OH)(2) and alpha-Fe2O3 and (b) Mn(OH)(2) and Fe(OH)(3) powders in a planetary ball mill. The mixture was activated for varying duration. Soft mechanochemical reaction leading to formation of the MnFe2O4 spinel phase was followed by X-ray diffraction, Raman spectroscopy, scanning and transmission microscopy and magnetization measurements. The spinel phase formation was first observed after 12 h of milling and its formation was completed after 25 h in both cases. The synthesized MnFe2O4 ferrite has a nanocrystalline structure with a crystallite size of about 40 and 50 nm respectively for cases (a) and (b). There are five Raman active modes. Measurements after 25 h of milling show magnetization values of 70.4 emu/g and 71.1 emu/g respectively for cases (a) and (b). In order to understand better the whole process of phase formation, Mossbauer measurements were done. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Study of manganese ferrite powders prepared by a soft mechanochemical route
VL  - 509
IS  - 41
SP  - 9977
EP  - 9985
DO  - 10.1016/j.jallcom.2011.08.004
ER  - 

@article{
author = "Lazarević, Zorica Ž. and Jovalekić, Čedomir and Recnik, A. and Ivanovski, Valentin N. and Mitrić, Miodrag and Romčević, Maja J. and Paunović, Novica M. and Cekić, Božidar Đ. and Romčević, Nebojša Ž.",
year = "2011",
abstract = "Manganese ferrite, MnFe2O4 have been prepared by a soft mechanochemical route from mixture of (a) Mn(OH)(2) and alpha-Fe2O3 and (b) Mn(OH)(2) and Fe(OH)(3) powders in a planetary ball mill. The mixture was activated for varying duration. Soft mechanochemical reaction leading to formation of the MnFe2O4 spinel phase was followed by X-ray diffraction, Raman spectroscopy, scanning and transmission microscopy and magnetization measurements. The spinel phase formation was first observed after 12 h of milling and its formation was completed after 25 h in both cases. The synthesized MnFe2O4 ferrite has a nanocrystalline structure with a crystallite size of about 40 and 50 nm respectively for cases (a) and (b). There are five Raman active modes. Measurements after 25 h of milling show magnetization values of 70.4 emu/g and 71.1 emu/g respectively for cases (a) and (b). In order to understand better the whole process of phase formation, Mossbauer measurements were done. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Study of manganese ferrite powders prepared by a soft mechanochemical route",
volume = "509",
number = "41",
pages = "9977-9985",
doi = "10.1016/j.jallcom.2011.08.004"
}

Lazarević, Z. Ž., Jovalekić, Č., Recnik, A., Ivanovski, V. N., Mitrić, M., Romčević, M. J., Paunović, N. M., Cekić, B. Đ.,& Romčević, N. Ž.. (2011). Study of manganese ferrite powders prepared by a soft mechanochemical route. in Journal of Alloys and Compounds, 509(41), 9977-9985.
https://doi.org/10.1016/j.jallcom.2011.08.004

Lazarević ZŽ, Jovalekić Č, Recnik A, Ivanovski VN, Mitrić M, Romčević MJ, Paunović NM, Cekić BĐ, Romčević NŽ. Study of manganese ferrite powders prepared by a soft mechanochemical route. in Journal of Alloys and Compounds. 2011;509(41):9977-9985.
doi:10.1016/j.jallcom.2011.08.004 .

Lazarević, Zorica Ž., Jovalekić, Čedomir, Recnik, A., Ivanovski, Valentin N., Mitrić, Miodrag, Romčević, Maja J., Paunović, Novica M., Cekić, Božidar Đ., Romčević, Nebojša Ž., "Study of manganese ferrite powders prepared by a soft mechanochemical route" in Journal of Alloys and Compounds, 509, no. 41 (2011):9977-9985,
https://doi.org/10.1016/j.jallcom.2011.08.004 . .

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  - https://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 . .

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  - https://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 A
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 A",
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 A, 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 A. 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 A, 116, no. 1 (2009):84-87,
https://doi.org/10.12693/APhysPolA.116.84 . .