| Phonon behavior of CaSnO(3) perovskite under pressure. | |
| | |
MedLine Citation:
|
PMID: 22168703 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Raman scattering and x-ray diffraction studies of CaSnO(3) perovskite were performed under high-pressure conditions. This high-pressure study was motivated by a recent theoretical study predicting a phase transition in CaSnO(3) from GdFeO(3)-type perovskite to CaIrO(3)-type structure occurred at 12 GPa. Despite no obvious structure change up to a pressure of 26 GPa based on the x-ray diffraction data, high pressure Raman measurements revealed that some Raman modes disappeared upon compression; either merging into neighboring bands or vanishing. The signals for these Raman peaks were recovered during decompression. The measured pressure derivative of Raman shift (∂ν∕∂P) of CaSnO(3) ranged from ∼1.29 to ∼4.35, up to 20 GPa. Due to the lack of lattice dynamic study for CaSnO(3) perovskite, the mode symmetry for CaSnO(3) was tentatively assigned based on the empirical relation among Ca-bearing perovskites. The pressure derivative of the Raman shifts was found to be related to their mode vibrations: modes related to Ca and O shifts had a strong pressure dependence compared with those associated with oxygen octahedral rotation. |
| | |
Authors:
|
Jennifer Kung; Yi-Ji Lin; Chih-Ming Lin |
Related Documents
:
|
2337273 - Effect of halothane, isoflurane, and pentobarbital anesthesia on myocardial irritabilit... 9492933 - Cardiopulmonary effects of anesthesia induced and maintained with isoflurane in cats. 21955363 - The impact of active and passive peer influence on young adult smoking: an experimental... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Journal of chemical physics Volume: 135 ISSN: 1089-7690 ISO Abbreviation: J Chem Phys Publication Date: 2011 Dec |
Date Detail:
|
Created Date: 2011-12-15 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0375360 Medline TA: J Chem Phys Country: United States |
Other Details:
|
Languages: eng Pagination: 224507 Citation Subset: IM |
Affiliation:
|
Department of Earth Sciences, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Applied Science, National Hsinchu University of Education, Hsinchu 30061, Taiwan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: On the existence of a third-order phase transition beyond the Andrews critical point: A molecular dy...
Next Document: Macroion solutions in the cell model studied by field theory and Monte Carlo simulations.