Papers

Aug, 2009

High-Pressure Phase Transition to the Gd2S3 Structure in Sc2O3: A New Trend in Dense Structures in Sesquioxides

INORGANIC CHEMISTRY
  • Hitoshl Yusa
  • ,
  • Taku Tsuchiya
  • ,
  • Nagayoshi Sata
  • ,
  • Yasuo Ohishi

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
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

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