1. Synthesis and electrical transport properties of p-type Ba8Ga16CdxGe30−x type-I clathrates
- Author
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Qingjie Zhang, Shukang Deng, Han Li, Yonggao Yan, and Xinfeng Tang
- Subjects
Electron mobility ,Materials science ,Electrical resistivity and conductivity ,Carrier scattering ,Impurity ,Seebeck coefficient ,Thermoelectric effect ,Analytical chemistry ,Spark plasma sintering ,Atmospheric temperature range - Abstract
P-type Ba8Ga16CdxGe30-x (x=0.95, 1.00, 1.05, 1.10) type-I clathrates with different Cd contents were synthesized by combining melt method with spark plasma sintering (SPS). The effects of Cd content on electrical transport properties have been investigated. The results show that all samples exhibit p-type conduction. The Seebeck coefficient alpha and room temperature carrier mobility muH decrease with the increasing Cd content. The electrical conductivity sigma and the room temperature carrier concentration Np increase with the increase of Cd content. In the low temperature range (T
- Published
- 2007
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