超伝導体の熱伝導に関する研究 : 第1報,化合物超伝導体Nb・SnおよびVコGaの熱伝導率測定

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The thermal conductivities of superconductors (Nb_3Sn, V_3Ga) dependent on the temperature are presented. We studied by using the steady-state comparative plate method. This comparative method is suitable for superconductors at low-temperatures. In this method, a reference sample of lead was placed in series with the unknown superconductor specimen. This comparative method has the advantages of simpler specimen fabrications and simpler equipment. Temperature measurements were made with AuFe-Cr thermocouples embedded in grooves on the superconductor specimens. The experimental data on thermal conductivities of superconductors have clearly changed to lower values, bounding on the transition conductivities of superconductors have clearly changed to lower values, bounding on the transition temperatures of superconductors. These non-dimensional thermal conductivites which are normalized by the values at the transition temperature of Nb_3Sn and V_3Ga show similar thermal conductivity trends depending on the non-dimensional temperature.
一般社団法人日本機械学会の論文
1987-07-25