Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1627109 | Journal of Alloys and Compounds | 2007 | 6 Pages |
Abstract
We have prepared and measured the electrical resistivity, Seebeck coefficient and thermal conductivity of the titled compounds in the 300–1050 K temperature range. The results show that both members of the solid solution are heavily doped semiconductor with a figure of merit zT reaching 0.80 at 1050 K for x = 1.6. Higher values of x resulted in multi phase samples. The heavily doped semiconducting nature of the materials is consistent with theoretical predictions based on valence-electron count (VEC). The flexible nature of the crystalline structure, range of VEC attainable, and existence of intercalation sites are discussed as a way to enhance the thermoelectric properties of materials of this particular structure type.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Franck Gascoin, Julia Rasmussen, G. Jeffrey Snyder,