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Improved thermoelectric properties of Bi-M-Co-O (M = Sr, Ca) misfit compounds by laser directional solidification

AuthorsDiez, J. C.; Rasekh, Sh.; Madre, M. A.; Guilmeau, E.; Marinel, S.; Sotelo, A.
Issue Date2010
CitationJournal of Electronic Materials 39(9): 1601-1605 (2010)
AbstractIn this work, improvement of the thermoelectric properties of bulk samples due to texture developed by a directional laser-assisted solidification process (laser floating zone melting method) is reported for cobaltite materials with compositions Bi2Sr2Co1.8O y and Bi2Ca2Co1.7O y . Sample composition and microstructure have been studied using x-ray diffraction and scanning electron microscopy. Thermoelectric properties have been measured between 4 K and 300 K by simultaneous determination of electrical resistivity and thermopower. All textured samples showed remarkable increase of power factor values as compared with conventional sintered ceramics.
DescriptionEl pdf del artículo es la versión manuscrita de autor.
Publisher version (URL)http://dx.doi.org/10.1007/s11664-010-1232-2
Identifiersdoi: 10.1007/s11664-010-1232-2
issn: 0361-5235
e-issn: 1543-186X
Appears in Collections:(ICMA) Artículos
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