Thermopower of GdIn3 and YbAl3

YbAl3 is a mixed valent system for which temperature independent and temperature dependent models of the Yb 3+ fraction have been proposed. An enlarged spin-disorder contribution to thermopower in associated with a temperature dependent model. The thermopower of GdIn3, an alloy which is isostructura...

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Bibliographic Details
Published in:Journal of applied physics 1981-01, Vol.52 (3), p.2217-2219
Main Author: Foiles, C. L.
Format: Article
Language:English
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Summary:YbAl3 is a mixed valent system for which temperature independent and temperature dependent models of the Yb 3+ fraction have been proposed. An enlarged spin-disorder contribution to thermopower in associated with a temperature dependent model. The thermopower of GdIn3, an alloy which is isostructural to YbAl3 and which is expected to have large spin-disorder effects associated with the Gd, has been measured and found to have small spin-disorder effects. Interpolating these findings to YbAl3 indicates that the spin-disorder contribution is about 2 orders of magnitude smaller than that required by the proposed temperature dependence for the Yb 3+ fraction.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.328883