Temperature-induced structure and microstructure evolution of nanostructured Ni0.9Zn0.1O
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Аутори
Kremenović, Aleksandar S.Antić, Bratislav
Vučinić-Vasić, Milica
Colomban, Philippe
Jovalekić, Čedomir
Bibić, Nataša M.
Kahlenberg, Volker
Leoni, Matteo
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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).
Извор:
Journal of Applied Crystallography, 2010, 43, 699-709Финансирање / пројекти:
- Serbian Ministry of Science, CEEPUS [CII-AT-0038-01-0506-M-2329]
DOI: 10.1107/S0021889810019163
ISSN: 0021-8898
WoS: 000279429500006
Scopus: 2-s2.0-77954509682
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Институција/група
VinčaTY - 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 . .