TY  - JOUR
AU  - Kremenović, Aleksandar S.
AU  - Antić, Bratislav
AU  - Vučinić-Vasić, Milica
AU  - Colomban, Philippe
AU  - Jovalekić, Čedomir
AU  - Bibić, Nataša M.
AU  - Kahlenberg, Volker
AU  - Leoni, Matteo
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4028
AB  - The crystal structure and microstructure of as-prepared and annealed Ni0.9Zn0.1O were refined at room temperature in both the Fm (3) over barm and R (3) over barm space groups. It is shown that below the Neel point (458 K), where magnetic ordering triggers the presence of a trigonal strain, the common usage of a higher-symmetry non-admissible space group for crystal structure and microstructure analysis via the Rietveld method may result in both an incorrect structure description and incorrect microstructure parameters (size and strain). More realistic microstructure data can be obtained by whole powder pattern modelling of the powder diffraction data. Increasing the annealing temperature causes a reduction of the trigonal distortion as well as an increase in domain size. Simultaneously, the Raman spectra become less resolved, a clear indication of domain growth and structural evolution of the structure towards cubic symmetry (R (3) over barm - GT Fm (3) over barm).
T2  - Journal of Applied Crystallography
T1  - Temperature-induced structure and microstructure evolution of nanostructured Ni0.9Zn0.1O
VL  - 43
SP  - 699
EP  - 709
DO  - 10.1107/S0021889810019163
ER  - 

@article{
author = "Kremenović, Aleksandar S. and Antić, Bratislav and Vučinić-Vasić, Milica and Colomban, Philippe and Jovalekić, Čedomir and Bibić, Nataša M. and Kahlenberg, Volker and Leoni, Matteo",
year = "2010",
abstract = "The crystal structure and microstructure of as-prepared and annealed Ni0.9Zn0.1O were refined at room temperature in both the Fm (3) over barm and R (3) over barm space groups. It is shown that below the Neel point (458 K), where magnetic ordering triggers the presence of a trigonal strain, the common usage of a higher-symmetry non-admissible space group for crystal structure and microstructure analysis via the Rietveld method may result in both an incorrect structure description and incorrect microstructure parameters (size and strain). More realistic microstructure data can be obtained by whole powder pattern modelling of the powder diffraction data. Increasing the annealing temperature causes a reduction of the trigonal distortion as well as an increase in domain size. Simultaneously, the Raman spectra become less resolved, a clear indication of domain growth and structural evolution of the structure towards cubic symmetry (R (3) over barm - GT Fm (3) over barm).",
journal = "Journal of Applied Crystallography",
title = "Temperature-induced structure and microstructure evolution of nanostructured Ni0.9Zn0.1O",
volume = "43",
pages = "699-709",
doi = "10.1107/S0021889810019163"
}

Kremenović, A. S., Antić, B., Vučinić-Vasić, M., Colomban, P., Jovalekić, Č., Bibić, N. M., Kahlenberg, V.,& Leoni, M.. (2010). Temperature-induced structure and microstructure evolution of nanostructured Ni0.9Zn0.1O. in Journal of Applied Crystallography, 43, 699-709.
https://doi.org/10.1107/S0021889810019163

Kremenović AS, Antić B, Vučinić-Vasić M, Colomban P, Jovalekić Č, Bibić NM, Kahlenberg V, Leoni M. Temperature-induced structure and microstructure evolution of nanostructured Ni0.9Zn0.1O. in Journal of Applied Crystallography. 2010;43:699-709.
doi:10.1107/S0021889810019163 .

Kremenović, Aleksandar S., Antić, Bratislav, Vučinić-Vasić, Milica, Colomban, Philippe, Jovalekić, Čedomir, Bibić, Nataša M., Kahlenberg, Volker, Leoni, Matteo, "Temperature-induced structure and microstructure evolution of nanostructured Ni0.9Zn0.1O" in Journal of Applied Crystallography, 43 (2010):699-709,
https://doi.org/10.1107/S0021889810019163 . .

TY  - JOUR
AU  - Vučinić-Vasić, Milica
AU  - Kremenović, Aleksandar S.
AU  - Nikolić, Aleksandar S.
AU  - Colomban, Philippe
AU  - Mazzerolles, Leo
AU  - Kahlenberg, Volker
AU  - Antić, Bratislav
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4055
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.
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 = "Vučinić-Vasić, Milica and Kremenović, Aleksandar S. 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.",
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"
}

Vučinić-Vasić, M., Kremenović, A. S., 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, 502(1), 107-111.
https://doi.org/10.1016/j.jallcom.2010.03.158

Vučinić-Vasić M, Kremenović AS, 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 .

Vučinić-Vasić, Milica, Kremenović, Aleksandar S., 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 . .