TY  - JOUR
AU  - Vucinic-Vasic, Milica
AU  - Kremenović, Aleksandar
AU  - Nikolić, Aleksandar S.
AU  - Colomban, Philippe
AU  - Mazzerolles, Leo
AU  - Kahlenberg, Volker
AU  - Antić, Bratislav
PY  - 2010
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1094
AB  - This paper reports results concerning the crystal structure of core and shell as well as microstructure of 25 nm-ytterbium sesquioxide (Yb(2)O(3)) nanoparticles synthesized using a unique method based on thermal decomposition of a 2,4 pentadione complex. Used Raman spectroscopy measurements indicate core/shell structure, with monoclinic or a mixture of monoclinic and cubic symmetry of the particle shell. In addition, XRPD and SAED confirmed bixbyite structure type for the core (space group Ia (3) over bar). Broadening of the observed Raman bands indicates structural distortions in the nanocrystalline sample. The size/strain analysis was done on XRPD data using Fullprof/MarqX approach. Anisotropy of X-ray line broadening is caused by size effects only. The resulting mean microstrain (6 x 10(-4)) points to a low concentration of defects within the crystallites. (C) 2010 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Core and shell structure of ytterbium sesquioxide nanoparticles
VL  - 502
IS  - 1
SP  - 107
EP  - 111
DO  - 10.1016/j.jallcom.2010.03.158
ER  - 

@article{
author = "Vucinic-Vasic, Milica and Kremenović, Aleksandar and Nikolić, Aleksandar S. and Colomban, Philippe and Mazzerolles, Leo and Kahlenberg, Volker and Antić, Bratislav",
year = "2010",
abstract = "This paper reports results concerning the crystal structure of core and shell as well as microstructure of 25 nm-ytterbium sesquioxide (Yb(2)O(3)) nanoparticles synthesized using a unique method based on thermal decomposition of a 2,4 pentadione complex. Used Raman spectroscopy measurements indicate core/shell structure, with monoclinic or a mixture of monoclinic and cubic symmetry of the particle shell. In addition, XRPD and SAED confirmed bixbyite structure type for the core (space group Ia (3) over bar). Broadening of the observed Raman bands indicates structural distortions in the nanocrystalline sample. The size/strain analysis was done on XRPD data using Fullprof/MarqX approach. Anisotropy of X-ray line broadening is caused by size effects only. The resulting mean microstrain (6 x 10(-4)) points to a low concentration of defects within the crystallites. (C) 2010 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Core and shell structure of ytterbium sesquioxide nanoparticles",
volume = "502",
number = "1",
pages = "107-111",
doi = "10.1016/j.jallcom.2010.03.158"
}

Vucinic-Vasic, M., Kremenović, A., Nikolić, A. S., Colomban, P., Mazzerolles, L., Kahlenberg, V.,& Antić, B.. (2010). Core and shell structure of ytterbium sesquioxide nanoparticles. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 502(1), 107-111.
https://doi.org/10.1016/j.jallcom.2010.03.158

Vucinic-Vasic M, Kremenović A, Nikolić AS, Colomban P, Mazzerolles L, Kahlenberg V, Antić B. Core and shell structure of ytterbium sesquioxide nanoparticles. in Journal of Alloys and Compounds. 2010;502(1):107-111.
doi:10.1016/j.jallcom.2010.03.158 .

Vucinic-Vasic, Milica, Kremenović, Aleksandar, Nikolić, Aleksandar S., Colomban, Philippe, Mazzerolles, Leo, Kahlenberg, Volker, Antić, Bratislav, "Core and shell structure of ytterbium sesquioxide nanoparticles" in Journal of Alloys and Compounds, 502, no. 1 (2010):107-111,
https://doi.org/10.1016/j.jallcom.2010.03.158 . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Kremenović, Aleksandar
AU  - Vučinić-Vasić, M.
AU  - Dohcevic-Mitrovic, Z.
AU  - Nikolić, Aleksandar S.
AU  - Gruden-Pavlović, Maja
AU  - Jancar, B.
AU  - Meden, A.
PY  - 2010
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1085
AB  - After controlled thermal degradation of acetylacetonato (AA) complexes, mixtures of monodisperse similar to 5 nm large isometric particles of Y2-xYbxO3 (x = 0.06, 0.10, 0.20, 0.40) were synthesized. Detailed information on nanoparticles' microstructure and core crystal structure is reported. The Yb3+ ions occupy preferently C-3i sites for low Yb3+ concentrations, while for 20 at.% Yb3+, a random distribution was found. It was shown that the particle/crystallite size and strain as well as Raman modes positions and widths are influenced by Yb3+ concentration. Crystallographic and Raman spectroscopy results indicate that the particles are core/shell structured with cubic crystalline core and monoclinic-like disordered shell. Most probable particle's shell/core volume ratio decreased with annealing at 500 degrees C and the shell disappeared when annealed at 1000 degrees C. (C) 2010 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes
VL  - 122
IS  - 2-3
SP  - 386
EP  - 391
DO  - 10.1016/j.matchemphys.2010.03.010
ER  - 

@article{
author = "Antić, Bratislav and Kremenović, Aleksandar and Vučinić-Vasić, M. and Dohcevic-Mitrovic, Z. and Nikolić, Aleksandar S. and Gruden-Pavlović, Maja and Jancar, B. and Meden, A.",
year = "2010",
abstract = "After controlled thermal degradation of acetylacetonato (AA) complexes, mixtures of monodisperse similar to 5 nm large isometric particles of Y2-xYbxO3 (x = 0.06, 0.10, 0.20, 0.40) were synthesized. Detailed information on nanoparticles' microstructure and core crystal structure is reported. The Yb3+ ions occupy preferently C-3i sites for low Yb3+ concentrations, while for 20 at.% Yb3+, a random distribution was found. It was shown that the particle/crystallite size and strain as well as Raman modes positions and widths are influenced by Yb3+ concentration. Crystallographic and Raman spectroscopy results indicate that the particles are core/shell structured with cubic crystalline core and monoclinic-like disordered shell. Most probable particle's shell/core volume ratio decreased with annealing at 500 degrees C and the shell disappeared when annealed at 1000 degrees C. (C) 2010 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes",
volume = "122",
number = "2-3",
pages = "386-391",
doi = "10.1016/j.matchemphys.2010.03.010"
}

Antić, B., Kremenović, A., Vučinić-Vasić, M., Dohcevic-Mitrovic, Z., Nikolić, A. S., Gruden-Pavlović, M., Jancar, B.,& Meden, A.. (2010). Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 122(2-3), 386-391.
https://doi.org/10.1016/j.matchemphys.2010.03.010

Antić B, Kremenović A, Vučinić-Vasić M, Dohcevic-Mitrovic Z, Nikolić AS, Gruden-Pavlović M, Jancar B, Meden A. Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes. in Materials Chemistry and Physics. 2010;122(2-3):386-391.
doi:10.1016/j.matchemphys.2010.03.010 .

Antić, Bratislav, Kremenović, Aleksandar, Vučinić-Vasić, M., Dohcevic-Mitrovic, Z., Nikolić, Aleksandar S., Gruden-Pavlović, Maja, Jancar, B., Meden, A., "Composition related properties of (Yb,Y)(2)O-3 nanoparticles synthesized by controlled thermal degradation of AA complexes" in Materials Chemistry and Physics, 122, no. 2-3 (2010):386-391,
https://doi.org/10.1016/j.matchemphys.2010.03.010 . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Rogan, J.
AU  - Kremenović, Aleksandar
AU  - Nikolić, Aleksandar S.
AU  - Vučinić-Vasić, M.
AU  - Bozanic, D. K.
AU  - Goya, G. F.
AU  - Colomban, Ph
PY  - 2010
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1082
AB  - Spherical shaped nanoparticles of series Y2-xEuxO3 (x = 0.06, 0.10, 0.20, and 2) and Gd2-xEuxO3 (x = 0.06, 0.10) were prepared by thermolysis of 2,4-pentanedione complexes of Y, Gd, and Eu. The bixbyite phase of Gd2-xEuxO3 samples was formed at 500 degrees C, whereas the thermal decomposition of Y and Eu complexes' mixtures occurred at higher temperatures. Linearity in the concentration dependence on lattice parameter confirmed the formation of solid solutions. The distribution of Eu3+ in Gd2-xEuxO3 was changed with thermal annealing: in the as-prepared sample (x = 0.10) the distribution was preferential at C-3i sites while in the annealed samples, Eu3+ were distributed at both C-2 and C-3i sites. Rietveld refinement of site occupancies as well as emission spectra showed a random distribution of cations in Y2-xEuxO3. The photoluminescence (PL) measurements of the sample showed red emission with the main peak at 614 nm (D-5(0)-F-7(2)). The PL intensity increased with increasing concentration of Eu3+ in both series. Infrared excitation was required to obtain good Raman spectra. The linear dependence of the main Raman peak wavenumber offers a non-destructive method for monitoring the substitution level and its homogeneity at the micron scale.
PB  - Iop Publishing Ltd, Bristol
T2  - Nanotechnology
T1  - Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes
VL  - 21
IS  - 24
DO  - 10.1088/0957-4484/21/24/245702
ER  - 

@article{
author = "Antić, Bratislav and Rogan, J. and Kremenović, Aleksandar and Nikolić, Aleksandar S. and Vučinić-Vasić, M. and Bozanic, D. K. and Goya, G. F. and Colomban, Ph",
year = "2010",
abstract = "Spherical shaped nanoparticles of series Y2-xEuxO3 (x = 0.06, 0.10, 0.20, and 2) and Gd2-xEuxO3 (x = 0.06, 0.10) were prepared by thermolysis of 2,4-pentanedione complexes of Y, Gd, and Eu. The bixbyite phase of Gd2-xEuxO3 samples was formed at 500 degrees C, whereas the thermal decomposition of Y and Eu complexes' mixtures occurred at higher temperatures. Linearity in the concentration dependence on lattice parameter confirmed the formation of solid solutions. The distribution of Eu3+ in Gd2-xEuxO3 was changed with thermal annealing: in the as-prepared sample (x = 0.10) the distribution was preferential at C-3i sites while in the annealed samples, Eu3+ were distributed at both C-2 and C-3i sites. Rietveld refinement of site occupancies as well as emission spectra showed a random distribution of cations in Y2-xEuxO3. The photoluminescence (PL) measurements of the sample showed red emission with the main peak at 614 nm (D-5(0)-F-7(2)). The PL intensity increased with increasing concentration of Eu3+ in both series. Infrared excitation was required to obtain good Raman spectra. The linear dependence of the main Raman peak wavenumber offers a non-destructive method for monitoring the substitution level and its homogeneity at the micron scale.",
publisher = "Iop Publishing Ltd, Bristol",
journal = "Nanotechnology",
title = "Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes",
volume = "21",
number = "24",
doi = "10.1088/0957-4484/21/24/245702"
}

Antić, B., Rogan, J., Kremenović, A., Nikolić, A. S., Vučinić-Vasić, M., Bozanic, D. K., Goya, G. F.,& Colomban, P.. (2010). Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes. in Nanotechnology
Iop Publishing Ltd, Bristol., 21(24).
https://doi.org/10.1088/0957-4484/21/24/245702

Antić B, Rogan J, Kremenović A, Nikolić AS, Vučinić-Vasić M, Bozanic DK, Goya GF, Colomban P. Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes. in Nanotechnology. 2010;21(24).
doi:10.1088/0957-4484/21/24/245702 .

Antić, Bratislav, Rogan, J., Kremenović, Aleksandar, Nikolić, Aleksandar S., Vučinić-Vasić, M., Bozanic, D. K., Goya, G. F., Colomban, Ph, "Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes" in Nanotechnology, 21, no. 24 (2010),
https://doi.org/10.1088/0957-4484/21/24/245702 . .