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Thermoelectric Properties of Eu-doped CoSb3

  • G. A. Lamberton (a1), R. H. Tedstrom (a1), Terry M. Tritt (a1) and G. S. Nolas (a2)

Abstract

Resistivity and thermopower data is presented on Eu-doped CoSb3 skutterudites over the temperature range of 10 K to 700 K. Thermal conductivity is also presented from 10 K to 300 K in order to determine the figure of merit. Eu0.43Co4Sb11.59Ge0.31 and Eu0.42Co4Sb11.37Ge0.50 exhibit an enhanced figure of merit as compared to CoSb3 and Eu0.2CoSb3. Data on a series of Yb-filled CoSb3 is underway and preliminary data is presented.

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1 Nolas, G. S., Morelli, D. T., and Tritt, T. M., Annu. Rev. Mater. Sci. 29, 89 (1999), and references therein.
2 Uher, C., in Semiconductors and Semimetals, Vol. 69, edited by Tritt, Terry M., (Academic Press, New York, NY, 2000), pp. 139254, and references therein.
3 Nolas, G. S., Cohn, J. L., and Slack, G. A., Phys. Rev. B 58, 164 (1998).
4 Nolas, G. S., Slack, G. A., Morelli, D. T., Tritt, T. M., and Ehrlich, A. C., J. Appl. Phys. 79, 4002 (1996).
5 Nolas, G. S., Kaeser, M., Littleton, R. T. IV, and Tritt, T. M., Appl. Phys. Lett. 77, 1855 (2000).
6 Pope, A. L., Littleton, R. T. IV, and Tritt, T. M., Rev. Sci. Instrum. 72, 3129 (2001).
7 Pope, A. L., Zawilski, B. M., and Tritt, T. M., Cryogenics, in press (2001).
8 Lamberton, G. A. Jr., Bhattacharya, S., Littleton, R. T. IV, Kaeser, M. A., Tedstrom, R. H., Tritt, T. M., Yang, J., and Nolas, G. S., Appl. Phys. Lett., in press (2002).
9 Meisner, G. P., Morelli, D. T., Hu, S., Yang, J., and Uher, C., Phys. Rev. Lett. 80, 3551 (1998).

Thermoelectric Properties of Eu-doped CoSb3

  • G. A. Lamberton (a1), R. H. Tedstrom (a1), Terry M. Tritt (a1) and G. S. Nolas (a2)

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