Thermoelectric properties of Mn- and Co-doped ß-FeSi2 single crystals

Co-doped and Mn-doped beta-FeSi 2 single crystals were grown by temperature gradient solution growth method using Ga as a solvent. Polyhedral shaped bulk crystals with well developed facets could be obtained. In particular, Co-doped single crystals which are large enough to measure the Seebeck coeff...

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Bibliographic Details
Published in2006 25th International Conference on Thermoelectrics pp. 566 - 568
Main Authors Ishida, Y., Kayamura, K., Takeda, M., Ohsugi, I.J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2006
Subjects
Anisotropic magnetoresistance
Crystalline materials
Crystallography
Crystals
Iron
Reflection
Solvents
Temperature
Thermoelectric devices
Thermoelectricity
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Summary:Co-doped and Mn-doped beta-FeSi 2 single crystals were grown by temperature gradient solution growth method using Ga as a solvent. Polyhedral shaped bulk crystals with well developed facets could be obtained. In particular, Co-doped single crystals which are large enough to measure the Seebeck coefficient along crystallographic axes were obtained. We determined the crystal orientation by Laue back reflection pattern, and measured the Seebeck coefficients of the Co-doped beta-FeSi 2 along the three orthorhombic crystal axes. The Seebeck coefficient along the a-axis was somewhat lower than the others, while that of the previously reported non-doped beta-FeSi 2 was the highest among the three directions. In addition, the anisotropy of the Co-doped beta-FeSi 2 was weaker compared with that of non-doped ones
ISBN:9781424408108
1424408105
ISSN:1094-2734
DOI:10.1109/ICT.2006.331377