Abstract

High-pressure Raman scattering experiments were performed for type-I Sn based clathrates, Ba8Ga16Sn30, at room temperature up to 6.9 GPa. We observed irreversible amorphization at 6 GPa. The rattling vibrations of the guest atoms in the cages were investigated up to 5.8 GPa. Pressure induced evolution of spectral shape of the rattling suggested that the reduction in the cage size causes the displacement of the guest atoms from the off center to the center in the cage.

Details

Title
Vibrational properties of Ba8Ga16Sn30 under high pressure
Author
Sukemura, T 1 ; Kume, T 2 ; Matsuoka, T 1 ; Sasaki, S 1 ; Onimaru, T 3 ; Takabatake, T 3 

 Department of Materials Science and Technology, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan 
 Department of Materials Science and Technology, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; To whom any correspondence should be addressed 
 Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan 
Publication year
2014
Publication date
May 2014
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576628754
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.