The First-Order Raman Spectra and Lattice Dynamics for CdWO_4 Crystal

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概要

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• The first-order Raman spectra of CdWO<SUB>4</SUB> crystal are measured at room temperature. The phonon disper-sion curves of CdWO<SUB>4</SUB> are calculated on the basis of a rigid-ion model using the measured frequency values. The first-order Raman spectra of external A<I>g</I> mode (310cm<SUP>-1</SUP> and 550cm<SUP>-1</SUP>) in the CdWO<SUB>4</SUB> crystal have been measured in the temperature range between 77 and 473K. The temperature dependence for the linewidth of the external A<I>g</I> modes has been analyzed at 310cm<SUP>-1</SUP> and 550cm<SUP>-1</SUP> 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 A<I>g</I> modes in CdWO<SUB>4</SUB> crystal is ap-proximately explained by the cubic anharmonic term in the expansion series of the crystal potential energy.

• 社団法人 日本分光学会の論文
• 2002-04-15

著者

• Suda Jun

  Department Of Electrical Engineering Kushiro National College Of Technology

• Saito Masaru

  Department of Oral Anatomy, Kanagawa Dental College

• Suda Jun

  Department Of Electronic Engineering Aomori Polytechnic College

• Sato Tsutomu

  Department Of Applied Biological Chemistry Faculty Of Agriculture And Graduate School Of Science And

• Saito Masaru

  Department Of Applied Chemistry Faculty Of Science And Technology Keio University

• Sato Tsutomu

  Department Of Agricultural Chemistry Faculty Of Agriculture Yamaguchi University

• Sato Tsutomu

  Department Of Materials Science And Technology Faculty Of Science And Technology Hirosaki University

• Saito Masaru

  Department Of Materials Science And Technology Faculty Of Science And Technology Hirosaki University

• Sato Tsutomu

  Departmenet of Physics,Faculty of Sience,Hirosaki University

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