https://doi.org/10.1140/epjb/e2010-00055-0
Improved thermal relaxation method for the simultaneous measurement of the specific heat and thermal conductivity
1
Condensed Matter Research Group of the Hungarian
Academy of Sciences and Department of Physics, Budapest University
of Technology and Economics, 1111 Budapest, Hungary
2
Solid
State Physics Laboratory, ETH Zurich, 8093 Zurich, Switzerland
Corresponding author: ldemko@dept.phy.bme.hu
Received:
16
October
2009
Revised:
15
December
2009
Published online:
16
February
2010
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.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010
