Journal
MATERIALS LETTERS
Volume 83, Issue -, Pages 144-147Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.05.131
Keywords
Texturing; Thermoelectric ceramics; Electrical properties; Thermopower
Funding
- CSIC
- MICINN-FEDER [MAT2008-00429]
- Universidad de Zaragoza [UZ2011-TEC-03]
- Gobierno de Aragon (Grupos de Investigacion consolidados) [T12, T87]
- FCT [REDE/1509/RME/2005]
- Portuguese Science and Technology Foundation (FCT) [PEst-C/CTM/LA0025/2011]
- [E-41/11]
- [AIB2010-PT-00247]
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Textured Bi2Ca2Co1.7Ox ceramic rods were obtained by Electrically Assisted Laser Floating Zone (EALFZ) technique. The polarity effects of an external current, applied during the laser floating zone growth, have been investigated. Microstructure and thermoelectric properties have been studied and correlated with the current polarity. An important improvement of power factor was obtained for samples grown with the positive pole connected to the seed. This result evidences the advantages of EALFZ technique as a potential method for obtaining high performance thermoelectric materials. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
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