Nickel-substituted skutterudites: synthesis, structural and electrical properties
| Autor: | Laurent Chapon, D. Ravot, Jean-Claude Tedenac |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Mechanical Engineering Metals and Alloys chemistry.chemical_element Thermal treatment Crystal structure Metal Cerium Nickel Crystallography chemistry Mechanics of Materials Electrical resistivity and conductivity visual_art Thermoelectric effect Materials Chemistry visual_art.visual_art_medium Figure of merit |
| Zdroj: | Journal of Alloys and Compounds. 282:58-63 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/s0925-8388(98)00850-0 |
| Popis: | Based on AB 3 (A=Co, Ir, Rh and B=P, As and Sb) compounds, filled skutterudites (MA 4 B 12 ; M=rare earth) are promising new thermoelectric elements. Increasing their figure of merit requires realizing substitutions to give these compounds semiconducting character with a carrier concentration around 10 19 cm −3 and decreasing their thermal conductivity. In this framework, many published works have been devoted to CeFe 4 Sb 12 which, although metallic due to the trivalent character of the cerium ion, is the starting compound for numerous substitutions. For Ce y Fe 4− x Ni x Sb 12 , the substitution of nickel for iron gives semiconducting compounds. In this paper, we present our results on these compounds synthesized by the thermal treatment usually applied to obtain CeFe 4 Sb 12 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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