Low-temperature preparation and thermoelectric properties of CrSi2, MnSi1.7+δ, and CoSi using a Na flux

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    Abstract

    Powders of transition metal silicides, CrSi2, MnSi1.7+δ, and CoSi, were prepared by heating powder mixtures of Cr, Mn, and Co metals and Si with a Na flux at 773-823 K for 12 h. The grains of the prepared metal silicide powders were composed of primary particles with sizes smaller than those of the source powders of the metals and Si. The bulk samples prepared by sintering the metal silicide powders were characterized. Maximum ZT values of 0.10, 0.42, and 0.13 were obtained for the samples of CrSi2 at 873 K, MnSi1.7+δ at 773 K, and CoSi at 623 K, respectively.

    Original languageEnglish
    Pages (from-to)1692-1695
    Number of pages4
    JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
    Volume10
    Issue number12
    DOIs
    Publication statusPublished - 2013 Dec

    Keywords

    • Low-temperature preparation
    • Na flux
    • Thermoelectric materials
    • Transition metal silicides

    ASJC Scopus subject areas

    • Condensed Matter Physics

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