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Thermal conductivity and critical current density in high Tc Y1 − xLnxBa2Cu3O7 − y

✍ Scribed by K. Noto; K. Watanabe; H. Morita; K. Mori; M. Sasakawa; Y. Isikawa; K Sato; T. Ishihara; E. Inukai; H. Fujimori; Y. Muto

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
224 KB
Volume
29
Category
Article
ISSN
0011-2275

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✦ Synopsis

Temperature dependences of critical current density and thermal conductivity have been studied in several high T c oxide superconductors (1-2-3 compounds). A Jc reversing phenomenon, in which critical current density, J~ at 4.2 K is smaller than at 77 K, was observed in some of them. The smaller Jo can be explained by the smaller quench current density expected from the very small thermal conductivity observed in these materials. Thermal conductivity turned out to be dominated by the phonon contribution.

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