Thermoelectric Properties of Co1-xFexSb3 Prepared by Encapsulated Induction Melting

Kwan Ho Park; Soon Chul Ur; Il Ho Kim

doi:10.4028/www.scientific.net/SSP.124-126.939

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HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Thermoelectric Properties of Co1-xFexSb3 Prepared...

Thermoelectric Properties of Co_1-xFe_xSb₃ Prepared by Encapsulated Induction Melting

Abstract:

Co1-xFexSb3 skutterudites were synthesized by encapsulated induction melting and their thermoelectric properties were investigated. Single phase δ-CoSb3 was successfully obtained by the subsequent heat treatment at 773K for 24 hours in vacuum. However, δ-CoSb3 was decomposed to FeSb2 and Sb when x≥0.3, which means that the solubility limit of Fe to Co is x<0.3. The positive signs of Seebeck coefficients for all Fe-doped specimens revealed that Fe atoms acted as p-type dopants by substituting Co atoms. Thermoelectric properties were remarkably enhanced by Fe doping and optimum composition was found to be Co0.7Fe0.3Sb3 in this study.

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Solid State Phenomena (Volumes 124-126)

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939-942

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https://doi.org/10.4028/www.scientific.net/SSP.124-126.939

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Online since:

June 2007

Authors:

Kwan Ho Park, Soon Chul Ur, Il Ho Kim

Keywords:

CoSb₃, Induction Melting, Skutterudite, Thermoelectric

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