Structural and Thermoelectric Properties of Ternary Full-Heusler Alloys

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10 Citations (Scopus)

Abstract

The thermoelectric properties of ternary full-Heusler alloys, Co2YZ, which are in a ferromagnetic state up to high temperature above 300 K, were measured and are discussed in terms of the crystal structure and electronic states. Among the full-Heusler alloys studied, the Co2MnSi sample exhibited the highest absolute value of Seebeck coefficient and also the highest electrical conductivity in the temperature range from 300 K to 1023 K. The highest power factor of 2.9 × 10−3 W/m-K2 was obtained for the Co2MnSi sample at 550 K, demonstrating the potential of half-metallic full-Heusler alloys as thermoelectric materials.

Original languageEnglish
Pages (from-to)2710-2716
Number of pages7
JournalJournal of Electronic Materials
Volume46
Issue number5
DOIs
Publication statusPublished - 2017 May 1

Keywords

  • Co-based full-Heusler alloys
  • crystal structure
  • electronic states
  • half-metal
  • magnetic phase transition
  • thermoelectric properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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