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Improved thermoelectric properties of gadolinium intercalated compounds GdxTiS2 at the temperaturesfrom 5 to 310 K

Published online by Cambridge University Press:  01 February 2006

D. Li ,
X.Y. Qin  and
J. Zhang
D. Li
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, 230031 Hefei, People’s Republic of China
X.Y. Qin*
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, 230031 Hefei, People’s Republic of China
J. Zhang
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, 230031 Hefei, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: xyqin@issp.ac.cn
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Abstract

The thermoelectric properties of Gd intercalated compounds GdxTiS2 have been investigated at the temperatures from 5 to 310 K. The results indicate that Gd intercalation into TiS2 leads to substantial decrease of both its electrical resistivity and its lattice thermal conductivity κL (κL is lowered by 20% and 46% at 300 K for x = 0.025 and 0.05, respectively). Specially, as compared to the pristine TiS2 the figure of merit ZT of the intercalated compound GdxTiS2 has been improved at all temperatures investigated, and specifically, the ZT value of Gd0.05TiS2 at 300 K is about three times as large as that of TiS2.

Keywords

IntercalationLayeredThermoelectricity

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Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 2 , February 2006 , pp. 480 - 483
Copyright
Copyright © Materials Research Society 2006

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References

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