Development of a new thermoelectric Bi2Ca2Co 1.7Ox + Ca3Co4O9 composite
Bi2Ca2Co1.7Ox nominal composition ceramic rods were textured by the electrically assisted laser floating zone technique. A new composite formed by three phases, two of them with well-known thermoelectric properties, Bi2Ca2Co 1.7Ox and Ca3Co4O9, was obtained for the first time when the growth process...
| Authors: | , , , , , , , |
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| Format: | article |
| Status: | Versión enviada para evaluación y publicación |
| Publication Date: | 2014 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/117948 |
| Online Access: | http://hdl.handle.net/10261/117948 |
| Access Level: | Open access |
| Keyword: | Electroceramics Directional solidification Cobaltites Thermoelectric materials Electrical resistivity |
| Summary: | Bi2Ca2Co1.7Ox nominal composition ceramic rods were textured by the electrically assisted laser floating zone technique. A new composite formed by three phases, two of them with well-known thermoelectric properties, Bi2Ca2Co 1.7Ox and Ca3Co4O9, was obtained for the first time when the growth process was performed with a 300 mA applied current. Under these conditions the thermoelectric performances of this new composite reach values above the highest ones reported in the literature for polycrystalline Bi2Ca2Co1.7Ox materials. © 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
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