Antiferrodistortive phase transition in EuTiO3.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00380651" target="_blank" >RIV/68378271:_____/12:00380651 - isvavai.cz</a>
Alternative codes found
RIV/00025798:_____/12:00000582 RIV/00216305:26620/12:PU99450
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.86.054112" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.86.054112</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.86.054112" target="_blank" >10.1103/PhysRevB.86.054112</a>
Alternative languages
Result language
angličtina
Original language name
Antiferrodistortive phase transition in EuTiO3.
Original language description
X-ray diffraction, dynamical mechanical analysis, and infrared reflectivity studies revealed an antiferrodistortive phase transition in EuTiO3 ceramics. Near 300 K, the perovskite structure changes from cubic Pm3m to tetragonal I4/mcm. Some ceramics as well as single crystals of EuTiO3 show different infrared reflectivity spectra bringing evidence of a different crystal structure. In such samples, electron diffraction revealed an incommensurate tetragonal structure with modulation wave vector q 0.38aa*.Extra phonons in samples with modulated structure are activated in the IR spectra due to folding of the Brillouin zone. We propose that defects such as Eu3+ and oxygen vacancies strongly influence the temperature of the phase transition to antiferrodistortive phase as well as the tendency to incommensurate modulation in EuTiO3.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
86
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
"054112-1"-"054112-9"
UT code for WoS article
000307717600001
EID of the result in the Scopus database
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