Thermoelectric Properties of Undoped CoSb3


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CoSb3 compounds were prepared by the arc melting and their thermoelectric properties were investigated at 300K-600K. Annealing effects were examined and they were correlated to phase transformation and homogenization. Undoped CoSb3 showed p-type conduction and intrinsic semiconducting behavior at all temperatures examined. Thermoelectric properties were changed with constituent phases because α-CoSb2, β-CoSb and Sb are metallic or semimetallic phases while δ-CoSb3 is semiconducting phase. Thermoelectric properties were remarkably improved by annealing in vacuum and they were closely related to phase transitions. Single phase δ-CoSb3 was successfully obtained by annealing at 400°C for 24hrs.



Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi




I. H. Kim et al., "Thermoelectric Properties of Undoped CoSb3", Materials Science Forum, Vols. 449-452, pp. 917-920, 2004

Online since:

March 2004




[1] J. -P. Fleurial, T. Caillat and A. Borshchevski: Proc. 13 th Intl. Conf. Thermoelectrics (1994), p.40.

[2] C. Uher, S. Hu and J. Yang: Proc. 17th Intl. Conf. Thermoelectrics (1998), p.306.

[3] G.S. Nolas, H.B. Lyon, J.L. Cohn, T.M. Tritt and G.A. Slack: Proc. 16 th Intl. Conf. Thermo- electrics (1997), p.321.

[4] J.W. Sharp, E.C. Jones, R.K. Williams, P.M. Martin and B.C. Sales: J. Appl. Phys. 78, 2 (1995), p.1013.

[5] G.S. Nolas, G.A. Slack, T.M. Tritt and D.T. Morelli: Proc. 14th Intl. Conf. Thermoelectrics (1995), p.236.

[6] T. Caillat, A. Borshchevski and J. -P. Fleurial: Proc. 13 th Intl. Conf. Thermoelectrics (1994), p.58.

[7] P. Feschotte and D. Lorin: J. Less-Comm. Met. 155 (1989), p.255.