Hostname: page-component-7bb8b95d7b-l4ctd Total loading time: 0 Render date: 2024-09-22T20:38:21.195Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCE

1.Mahan, G., Sales, B. and Sharp, J.: Thermoelectric materials: New approaches to an old problem. J. Phys. Today 50, 42 (1997).CrossRefGoogle Scholar
2.Imai, H., Shimakaua, Y. and Kubo, Y.: Large thermoelectric power factor in TiS2 crystal with nearly stoichiometric composition. Phys. Rev. B 64, 241104 (2001).CrossRefGoogle Scholar
3.Slack, G.A. Design concepts for improved thermoelectric materials, in Thermoelectric Materials—New Directions and Approaches, edited by Tritt, T.M., Kanatzidis, M.G., Lyon, H.B. Jr. and Mahan, G.D. (Mater. Res. Soc. Symp. Proc. 478 Pittsburgh, PA, 1997), p. 47.Google Scholar
4.Sales, B.C., Mandrus, D. and Williams, R.K.: Filled skutterudite antimonides: A new class of thermoelectric materials. Science 272, 1325 (1996).CrossRefGoogle ScholarPubMed
5.Fujimori, A., Suga, S., Negishi, H. and Inoue, M.: X-ray photoemission and Auger-electron spectroscopic study of the electronic structure of intercalation compounds MxTiS2 (M = Mn, Fe, Co, and Ni). Phys. Rev. B 38, 3676 (1988).CrossRefGoogle ScholarPubMed
6.Logothetis, E.M., Kaiser, W.J., Kukkonen, C.A., Faile, S.P., Colella, R. and Gambold, J.: Hall coefficient and reflectivity evidence that TiS2 is a semiconductor. J. Phys. C: Solid State Phys. 12, L521 (1979).CrossRefGoogle Scholar
7.Julien, C. and Samaras, I.: Optical and electrical-transport studies on lithium-intercalated TiS2. Phys. Rev. B 45, 13390 (1992).CrossRefGoogle ScholarPubMed
8.Li, D., Qin, X.Y., Liu, J. and Yang, H.S.: Electrical resistivity and thermopower of intercalation compounds BixTiS2. Phys. Lett. A 328, 493 (2004).CrossRefGoogle Scholar