Improved thermal relaxation method for the simultaneous measurement of the specific heat and thermal conductivity

L. Demkó (), I. Kézsmárki, M. Csontos, S. Bordács and G. Mihály

The European Physical Journal B: Condensed Matter and Complex Systems, 2010, vol. 74, issue 1, 27-33

Abstract: A novel method for the simultaneous, high-resolution measurement of the specific heat c and the thermal conductivity κ is presented. A new experimental setup has been developed with special emphasis on the elimination of systematic errors arising from radiative heat loss. A self-consistent data evaluation method is implemented which takes the effects of the sample geometry on c and κ properly into account. The measurements were performed over a broad temperature regime from 3 K up to room temperature on three compounds from the family of strongly correlated electron systems. The differences in their thermal properties and their highly sample-dependent sizes and shapes demonstrate the extended scope of the proposed method. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Date: 2010
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DOI: 10.1140/epjb/e2010-00055-0

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