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ID 17118
本文ファイル
著者
Kondo, Toshihisa
Takasu, Yuichi
Takeda, Naoya
Ishikawa, K.
Sugawara, Hitoshi
Kikuchi, Daisuke
Sato, Hideyuki
Sekine, Chihiro
Shirotani, Ichimin
キーワード
Skutterudite
Raman scattering
rattling vibration
NDC
物理学
抄録(英)
Raman scattering spectra of filled skutterudite RT4X12 (R=La, Ce, Pr, Nd, Sm and Y, T=Fe, Ru and Os, and X=Sb and P) and unfilled skutterudite CoP3 have been measured. All first-order Raman active phonons, which are due to the vibration of pnictogens, are observed. In addition, the crystal field excitations in PrRu4P12 spectra and the 2nd- order phonons including rare-earth vibrations in SmRu4P12 and ROs4Sb12 are also observed. The 2nd- order phonons can be observed for the sample with the larger cage space. The peak intensity of the 2nd- order phonons decreases with decreasing temperature and vanishes at low temperature. Such a temperature dependence suggests that the 2nd- order phonons are thermally excited and due to independent vibrations of the rare-earth ions, that is rattler motion.
掲載誌名
Physica B : Condensed Matter
383巻
1号
開始ページ
128
終了ページ
129
出版年月日
2006-08-15
出版者
Elsevier
ISSN
0921-4526
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2006 Elsevier Ltd.
関連情報URL
部局名
先端物質科学研究科