Raman scattering investigation of skutterudite compounds
Physica B : Condensed Matter Volume 383 Issue 1
Page 128-129
published_at 2006-08-15
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| File | |
| Title ( eng ) |
Raman scattering investigation of skutterudite compounds
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| Creator |
Kondo Toshihisa
Takasu Yuichi
Takeda Naoya
Ishikawa K.
Sugawara Hitoshi
Kikuchi Daisuke
Sato Hideyuki
Sekine Chihiro
Shirotani Ichimin
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| Source Title |
Physica B : Condensed Matter
|
| Volume | 383 |
| Issue | 1 |
| Start Page | 128 |
| End Page | 129 |
| Abstract |
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.
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| Keywords |
Skutterudite
Raman scattering
rattling vibration
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| NDC |
Physics [ 420 ]
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
Elsevier
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| Date of Issued | 2006-08-15 |
| Rights |
Copyright (c) 2006 Elsevier Ltd.
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0921-4526
[DOI] 10.1016/j.physb.2006.03.076
[NCID] AA10673546
[DOI] http://dx.doi.org/10.1016/j.physb.2006.03.076
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