Mechanical and thermal properties of single crystals of some thermoelectric clathrate compounds

Norihiko L. Okamoto, Takahiro Nakano, Kyosuke Kishida, Katsushi Tanaka, Haruyuki Inui

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The mechanical and thermal properties of single crystals of the type-I clathrate compounds Ba8Ga16Ge30 and Sr 8Ga16Ge30 have been investigated by measuring the elastic constants, coefficients of thermal expansion (CTE) and plastic deformation behavior in compression. The feasibility of these two clathrate compounds as a thermoelectric material in terms of mechanical stability under possible thermal stresses is evaluated by calculating thermal stresses that are expected to develop within these compounds when used as thermoelectric devises.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume1128
Publication statusPublished - 2009 Nov 17
Externally publishedYes
Event2008 MRS Fall Meeting - Boston, MA, United States
Duration: 2008 Dec 22008 Dec 5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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