Investigation of the thermoelectric properties of the series TiCo 1-xNixSnxSb1-x

Joachim Barth, M. Schoop, Andrei Gloskovskii, Andrey Shkabko, Anke Weidenkaff, Claudia Felser

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The effect of the simultaneous substitution of cobalt by nickel and antimony by tin in the solid solution TiCo1-xNixSn xSb1-x was systematically investigated. The number of valence electrons does not change by this substitution and therefore the resistivity stays semimetallic or semiconducting. The series were synthesized by arcmelting and the thermoelectric properties were determined. It was found out that the substitution of cobalt and antimony by nickel and tin reduces the thermal conductivity to 2 W.m-1 .K-1 at 400 K. The reduction is caused by titanium rich prolate micro structures that were found by energy dispersive X-ray spectroscopy investigations. The Seebeck coefficient and the resistivity increase with increasing amounts of cobalt and antimony. The highest Power factor was found for the composition TiCo0.8Ni 0.2Sn0.8Sb0.2 at 900 K with the value of 9.2 μW.cm-1.K-1.

Original languageEnglish (US)
Pages (from-to)132-136
Number of pages5
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume636
Issue number1
DOIs
StatePublished - Jan 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

Keywords

  • Intermetallic phases
  • Low temperature studies
  • Materials science
  • Thermoelectric properties
  • Titanium

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