Thermal conductivity and heat capacity of titanium hydrides

We have measured the thermal conductivity Kappa and the heat capacity C of Ti, TiH sub(0.82), TiH sub((1.7)), and TiH sub(2) at 0.35 K less than or equal to T less than or equal to 4 K. Whereas Kappa (TiH sub(0.82)) and Kappa (TiH sub((1.7))) are substantially smaller than Kappa (Ti), we find Kappa...

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Bibliographic Details
Published in:Journal of low temperature physics 1992-08, Vol.88 (3-4), p.309-315
Main Authors: LI, J, PFLAUM, A, POBELL, F, SEKOWSKI, P, STUHR, U, WIPF, H
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Thermal properties of condensed matter
Thermal properties of crystalline solids
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Summary:We have measured the thermal conductivity Kappa and the heat capacity C of Ti, TiH sub(0.82), TiH sub((1.7)), and TiH sub(2) at 0.35 K less than or equal to T less than or equal to 4 K. Whereas Kappa (TiH sub(0.82)) and Kappa (TiH sub((1.7))) are substantially smaller than Kappa (Ti), we find Kappa (TiH sub(2)) approximately equals 3 Kappa (Ti). This latter remarkable result may arise from the enhanced electronic density of state - which is shown by the heat capacity data - and from a rather large electronic mean free path in this stoichiometric compound.
ISSN:0022-2291
1573-7357
DOI:10.1007/BF00162965