Raman and UV-Visible Absorption Spectroscopy of Rare-Earth Hydride under High Pressure

• KUME Tetsuji

  Department of Materials Science and Technology, Gifu University

• MACHIDA Akihiko

  Quantum Beam Science Directorate, Japan Atomic Energy Agency

• AOKI Katsutoshi

  Quantum Beam Science Directorate, Japan Atomic Energy Agency

• SASAKI Shigeo

  Department of Materials Science and Technology, Gifu University

• SHIMIZU Hiroyasu

  Department of Materials Science and Technology, Gifu University

Bibliographic Information

Other Title

• 高圧力下における希土類水素化物のラマン散乱および可視紫外吸収分光
• コウアツリョク カ ニ オケル キドルイ スイソカブツ ノ ラマン サンラン オヨビ カシ シガイ キュウシュウ ブンコウ

Abstract

  Raman and visible absorption spectra of rare earth trihydrides have been measured at high pressures, in order to investigate the structural and electronic phase transitions. The successive phase transitions of hcp-intermediate-fcc phase were confirmed by Raman measurements. From the visible absorption experiments, the band gap energy was estimated. The gap closure was found to occur on the transition from the intermediate to the fcc phase.<br>

Journal

• The Review of High Pressure Science and Technology

  The Review of High Pressure Science and Technology 21 (3), 184-189, 2011

  The Japan Society of High Pressure Science and Technology

Keywords

• metal hydride
• structural transition
• electronic transition
• Raman scattering
• visible absorption

Details

• CRID: 1390001204381766912
• NII Article ID: 10029831617
• NII Book ID: AN10452913
• DOI: 10.4131/jshpreview.21.184
• ISSN: 13481940
• ISSN: 0917639X
• NDL BIB ID: 11287062
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11287062
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed