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

K. Noto, K. Watanabe, H. Morita, K. Mori, M. Sasakawa, Y. Isikawa, K. Sato, T. Ishihara, E. Inukai, H. Fujimori, Y. Muto

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Abstract

Temperature dependences of critical current density and thermal conductivity have been studied in several high Tc oxide superconductors (1-2-3 compounds). A Jc reversing phenomenon, in which critical current density, Jc at 4.2 K is smaller than at 77 K, was observed in some of them. The smaller Jc 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.

Original languageEnglish
Pages (from-to)648-650
Number of pages3
JournalCryogenics
Volume29
Issue number6
DOIs
Publication statusPublished - 1989 Jun

Keywords

  • critical currents
  • high T superconductivity
  • stability
  • superconducting oxides
  • thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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    Noto, K., Watanabe, K., Morita, H., Mori, K., Sasakawa, M., Isikawa, Y., Sato, K., Ishihara, T., Inukai, E., Fujimori, H., & Muto, Y. (1989). Thermal conductivity and critical current density in high Tc Y1 - xLnxBa2Cu3O7 - y. Cryogenics, 29(6), 648-650. https://doi.org/10.1016/0011-2275(89)90124-0