Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Thermoelectric Properties of Co1-xFexSb3 Prepared by Encapsulated Induction Melting

밀폐유도용해로 제조된 Co1-xFexSb3의 열전특성

  • Park, Kwan-Ho (Department of Materials Science and Engineering/ReSEM, Chungju National University) ;
  • Koh, Dong-Wook (Department of Materials Science and Engineering/ReSEM, Chungju National University) ;
  • Ur, Soon-Chul (Department of Materials Science and Engineering/ReSEM, Chungju National University) ;
  • Kim, Il-Ho (Department of Materials Science and Engineering/ReSEM, Chungju National University)
  • 박관호 (충주대학교 신소재공학과/친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 고동욱 (충주대학교 신소재공학과/친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 어순철 (충주대학교 신소재공학과/친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 김일호 (충주대학교 신소재공학과/친환경 에너지 변환.저장소재 및 부품개발 연구센터)
  • Published : 2006.06.27
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Abstract

[ $Co_{1-x}Fe_xSb_3$ ] skutterudites were synthesized by encapsulated induction melting and their thermoelectric properties were investigated. Single phase ${\delta}-CoSb_3$ was successfully obtained by the subsequent heat treatment at 773 K for 24 hours in vacuum. However, ${\delta}-CoSb_3$ was decomposed to FeSb2 and Sb when $x{\leq}0.3$, 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 $Co_{0.7}Fe_{0.3}Sb_3$ in this study.

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References

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