| 학회 | 한국재료학회 |
| 학술대회 | 2006년 가을 (11/03 ~ 11/03, 수원대학교) |
| 권호 | 12권 2호 |
| 발표분야 | 에너지 환경재료 |
| 제목 | Electronic Transport Properties of Fe-doped CoSb3 Prepared by Encapsulated Induction Melting |
| 초록 | Fe-doped CoSb3 skutterudites (Co1-xFexSb3) [1,2] were prepared by encapsulated induction melting, and their thermoelectric and electronic transport 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. Electrical resistivity and thermal conductivity decreased with increasing the Fe doping level. ZT was considerably enhanced by the Fe doping, and optimum composition in this work was found as Co0.7Fe0.3Sb3 for the Fe-doped CoSb3 prepared by encapsulated induction melting. This was closely related with solubility limit of Fe to Co. Acknowledgments: This work was supported by the Regional Innovation Center (RIC) Program conducted by the Ministry of Commerce, Industry and Energy of Korean Government. [1] S. Katsuyama, Y. Shichijo, M. Ito, K. Majima, H. Nagai, J. Appl. Phys. 84 (1998) 6708. [2] T. Caillat, A. Borshchevski, J.-P. Fleurial, J. Appl. Phys. 80 (1996) 4442. |
| 저자 | Kwan-Ho Park1, Soon-Chul Ur2, Il-Ho Kim1 |
| 소속 | 1Department of Materials Science and Engineering/ReSEM, 2Chungju National Univ. |
| 키워드 | Thermoelectric; Skutterudite |
