Temperature Dependence of the Linewidth of the Eg Modes of the Raman Spectra for NaNO┣D213D2 Crystal

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著者

    • 須田 潤 SUDA Jun
    • 青森職業能力開発短期大学校 Departmetn of Electronic Engineering, Aomori Polytechnic College
    • 佐藤 孜 SATO Tsutomu
    • 弘前大学理工学部物質理工学科 Department of Materials Science and Technology, Faculty of Science and Technology, Hirosaki University

抄録

The first-order Raman spectra of <I>E<SUB>g</SUB></I> (2) (186cm<SUP>-1</SUP>) and <I>E<SUB>g</SUB></I> (4) (1385cm<SUP>-1</SUP>) modes in NaNO<SUB>3</SUB> crystal were measured in the temperature range of 77-473 K and the linewidths at these temperatures were obtained. The temperature dependence of the linewidths was analyzed using the phonon dispersion curves calculated on the basis of a modified rigid-ion model. The results showed that the temperature dependence of the linewidth is caused by the cubic anharmonic term in the crystal potential energy for external <I>E<SUB>g</SUB></I> (2) mode (186cm<SUP>-1</SUP>), while it is caused by the cubic anharmonic term and quartic one in the crystal potential energy for internal <I>E<SUB>g</SUB></I> (4) mode (1385cm<SUP>-1</SUP>). This suggested that since a NaNO3 crystal has a very large energy gap between internal modes and external ones with three phonon process, decay channel for internal modes has a stronger tendency to affect on phonon lifetime than that in the case of external modes.

収録刊行物

  • 分光研究 = Journal of the spectroscopical research of Japan  

    分光研究 = Journal of the spectroscopical research of Japan 48(6), 246-254, 1999-12-15 

    The Spectroscopical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10004267347
  • NII書誌ID(NCID)
    AN00222531
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    00387002
  • NDL 記事登録ID
    4977072
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-1
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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