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Pressure dependence...
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Jacobsson, PerUmeå universitet,Institutionen för fysik
(author)
Pressure dependence of the thermal and electrical conductivities of the intermetallic compounds AuCu and AuCu3
- Article/chapterEnglish1988
Publisher, publication year, extent ...
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Elsevier BV,1988
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:umu-26759
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-26759URI
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https://doi.org/10.1016/0022-3697(88)90105-9DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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The thermal diffusivity, a, electrical resistivity, ρ, and Seebeck coefficient, S, of ordered and disordered AuCu3 and AuCu have been measured as functions of T and P in the range 100–300 K and 0–2 GPa, and the thermal conductivity, λ, has been calculated from the data for a. The experimental data for ρ agree well with literature data. The ρ dependence of ρ and λ differs significantly between ordered and disordered specimens, but apart from the effect of impurity scattering the disordered materials behave much like the noble metals. For the temperature-dependent part of p (and λ) the P dependence differs by a factor of 2–3 between ordered and disordered states. This is shown to result from the difference in electron band structure, as reflected also in the thermoelectric parameter ξ. The P dependence of the relatively large lattice thermal conductivity of these materials causes the Lorenz ratio L = λρ/T to increase with ρ in all cases.
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Sundqvist, BertilUmeå universitet,Institutionen för fysik(Swepub:umu)besu0001
(author)
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Umeå universitetInstitutionen för fysik
(creator_code:org_t)
Related titles
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In:Journal of Physics and Chemistry of Solids: Elsevier BV49:4, s. 441-4500022-36971879-2553
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