Development of a new thermoelectric Bi2Ca2Co 1.7Ox + Ca3Co4O9 composite

Bi2Ca 2Co 1.7Ox 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, Bi 2Ca2Co 1.7Ox and Ca 3Co 4O 9, was obtained for the first time when the growth p...

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Detalles Bibliográficos
Autores: Rasekh, Sh., Ferreira, N.M., Costa, F.M., Constantinescu, G., Madre, M.A., Torres, M.A., Diez, J.C., Sotelo, A.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:168094
Acceso en línea:http://zaguan.unizar.es/record/168094
Access Level:acceso abierto
Descripción
Sumario:Bi2Ca 2Co 1.7Ox 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, Bi 2Ca2Co 1.7Ox and Ca 3Co 4O 9, 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 Bi 2Ca2Co 1.7Ox materials.