Peculiarity of ternary stannides and antimonides exhibiting potentially thermoelectric properties: Crystal structures, physical properties, electronic structures

L. P. Romaka, O. Bodak, Yu V. Stadnyk, M. G. Shelyapina, D. Fruchart, E. K. Hlil, P. Wolfers

Research outputpeer-review

Abstract

Three different types of new ternary stannides and antimonides have been recently synthesized and investigated for their structural and physical properties, and systematically analyzed in terms of band structure determination. These materials are formed with an early d-metal such as Ti, Zr, Hf (as well as Sc for a part), a late d-metal such as Co, Ni, Cu, and X being Sn or Sb. The crystal structure analyses show that they crystallize either with a derivative Cu2Sb, or a TiNiSi or mostly with the MgAgAs (semi-Heusler) type structure. Strong covalent bonding are evidenced from this analyses. The band structure calculations reveal that the late d-metal bands do not contribute significantly to the conduction, but the conductivity (if any) issues from the d- or p- type electrons of the early d-metals. This allows to control fairly the opening a gap (or semi-gap) at EF via the VEC, and to initiate interesting thermo-electric properties.

Original languageEnglish
Title of host publicationAdvanced Materials for Energy Conversion III - A Symposium in Honor of Drs. Gary Sandrock, Louis Schlapbach and Seijirau Suda for Lifetime Achievements in Metal Hydride Research and Development
Pages373
Number of pages1
Volume2006
Publication statusPublished - 2006
Event2006 TMS Annual Meeting - San Antonio
Duration: 12 Mar 200616 Mar 2006
http://www.tms.org/Meetings/Annual-06/AnnMtg06Home.html

Conference

Conference2006 TMS Annual Meeting
CountryUnited States
CitySan Antonio
Period12/03/0616/03/06
Internet address

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Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Romaka, L. P., Bodak, O., Stadnyk, Y. V., Shelyapina, M. G., Fruchart, D., Hlil, E. K., & Wolfers, P. (2006). Peculiarity of ternary stannides and antimonides exhibiting potentially thermoelectric properties: Crystal structures, physical properties, electronic structures. In Advanced Materials for Energy Conversion III - A Symposium in Honor of Drs. Gary Sandrock, Louis Schlapbach and Seijirau Suda for Lifetime Achievements in Metal Hydride Research and Development (Vol. 2006, pp. 373)