Dynamical motion of a guest ion studied by Raman scattering and the lattice thermal conductivity in A8Ga16Si30-xGe x (A = Ba, Sr)

Y. Takasu, T. Hasegawa, N. Ogita, M. Udagawa, Koichiro Suekuni, M. A. Avila, T. Takabatake

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

Dynamical motions of a guest ion in type-I clathrate compounds have been investigated using Raman scattering. It has been found that the 4th order anharmonic potential is important for the guest ion motion not only for A 8Ga16Ge30 (A=Ba, Sr, Eu), but also for A 8Ga16Si30-xGex (A = Ba, Sr). The substitution of Ge expands isotropically the cage at 6d-site for Ba 8Ga16Si30-xGex, however, anisotropically for Sr8Ga16Si30-xGe x. Especially, for Sr8Ga16Si 30-xGex, the off-center rattling develops with increasing Ge concentration and plays an important role to the suppression of the lattice thermal conductivity.

元の言語英語
ホスト出版物のタイトルProceedings ICT'07 - 26th International Conference on Thermoelectrics
ページ223-225
ページ数3
DOI
出版物ステータス出版済み - 12 1 2007
外部発表Yes
イベントICT'07 - 26th International Conference on Thermoelectrics - Jeju, 大韓民国
継続期間: 6 3 20076 7 2007

出版物シリーズ

名前International Conference on Thermoelectrics, ICT, Proceedings

その他

その他ICT'07 - 26th International Conference on Thermoelectrics
大韓民国
Jeju
期間6/3/076/7/07

All Science Journal Classification (ASJC) codes

  • Engineering(all)

フィンガープリント Dynamical motion of a guest ion studied by Raman scattering and the lattice thermal conductivity in A<sub>8</sub>Ga<sub>16</sub>Si<sub>30-x</sub>Ge <sub>x</sub> (A = Ba, Sr)' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Takasu, Y., Hasegawa, T., Ogita, N., Udagawa, M., Suekuni, K., Avila, M. A., & Takabatake, T. (2007). Dynamical motion of a guest ion studied by Raman scattering and the lattice thermal conductivity in A8Ga16Si30-xGe x (A = Ba, Sr). : Proceedings ICT'07 - 26th International Conference on Thermoelectrics (pp. 223-225). [4569464] (International Conference on Thermoelectrics, ICT, Proceedings). https://doi.org/10.1109/ICT.2007.4569464