The First-Order Raman Spectra and Lattice Dynamics for CdWO4 Crystal.

• SAITO Masaru

  Department of Materials Science and Technology, Faculty of Science and Technology, Hirosaki University

• SUDA Jun

  Department of Electronic Engineering, Aomori Polytechnic College

• SATO Tsutomu

  Department of Materials Science and Technology, Faculty of Science and Technology, Hirosaki University

抄録

The first-order Raman spectra of CdWO₄ crystal are measured at room temperature. The phonon disper-sion curves of CdWO₄ are calculated on the basis of a rigid-ion model using the measured frequency values. The first-order Raman spectra of external Ag mode (310cm^-1 and 550cm^-1) in the CdWO₄ crystal have been measured in the temperature range between 77 and 473K. The temperature dependence for the linewidth of the external Ag modes has been analyzed at 310cm^-1 and 550cm^-1 using the lattice dynamical perturebative treatment, and the calculated result agrees with the observed one in the temperature range of 77-473K. Thus, the temperature dependence of linewidth of the external Ag modes in CdWO₄ crystal is ap-proximately explained by the cubic anharmonic term in the expansion series of the crystal potential energy.

収録刊行物

• 分光研究

  分光研究 51 (2), 65-71, 2002

  社団法人 日本分光学会

キーワード

• Raman spectra
• phonon dispersion curve
• rigid-ion model
• two-phonon density of states and cubicanharmonic term.

詳細情報

• CRID: 1390001206258771072
• NII論文ID: 10008204808
• NII書誌ID: AN00222531
• DOI: 10.5111/bunkou.51.65
• ISSN: 18846785
• ISSN: 00387002
• NDL書誌ID: 6148418
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6148418
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可