Aug, 2009
High-Pressure Phase Transition to the Gd2S3 Structure in Sc2O3: A New Trend in Dense Structures in Sesquioxides
INORGANIC CHEMISTRY
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- ,
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- Volume
- 48
- Number
- 16
- First page
- 7537
- Last page
- 7543
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1021/ic9001253
- Publisher
- AMER CHEMICAL SOC
In situ X-ray diffraction experiments using a laser-heated diamond anvil cell revealed a novel dense phase with the Gd2S3 structure stabilizing in Sc2O3 at pressures over 19 GPa. Although no phase transformation was induced during room-temperature compression up to 31 GPa, the C rare earth sesquioxide structure transformed into the B rare earth sesquioxicle structure at 10 GPa after laser annealing and subsequently into the Gd2S3 structure at 19 GPa. Neither the A rare earth sesquioxicle structure nor the U2S3 structure was found in Sc2O3. Static density functional lattice energy calculations demonstrated that the C structure prefers Gd2S3 over U2S3 as the post phase. Sc2O3 is the second sesquioxicle, after In2O3, to crystallize into a Gd2S3 structure at high pressures and high temperatures.
- Link information
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- DOI
- https://doi.org/10.1021/ic9001253
- CiNii Articles
- http://ci.nii.ac.jp/naid/80020525083
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/19366188
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000268661500013&DestApp=WOS_CPL
- ID information
-
- DOI : 10.1021/ic9001253
- ISSN : 0020-1669
- CiNii Articles ID : 80020525083
- Pubmed ID : 19366188
- Web of Science ID : WOS:000268661500013