Magnetic Instabilities in High Field Superconductors

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概要

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• In the process of magnetizing cylindrical specimens of a typical high field superconductor Nb-50 at.% Ti, flux jumps were induced by magnetic disturbances. The stability limit field H_<fj> increased steadily with increasing temperature, and no magnetic instability occurred for temperatures in excess of about 6.5 K. The calculation of H_<fj> was performed taking into account the cylindrical sample geometry and the critical state equation J_cB^<1-γ>=α. According to the relative magnitudes of the magnetic diffusivity D_m and the thermal diffusivity D_t, the expression of H_<fj> was derived for two cases; (1) D_m>D_t, and (2) D_m≪D_t. Good agreement between experiment and theory was obtained on the stability limit field H_<fj> and the temperature above which magnetic instabilities do not take place.

• 社団法人応用物理学会の論文
• 1981-08-05

著者

• Yasukochi Ko

  Atomic Energy Research Institute College Of Science And Technology Nihon University

• Yasukochi Ko

  Atomic Energy Research Institute College Of Science And Engineering Nihoh University

• AKACHI Tatsuo

  Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mixico

• OGASAWARA Takeshi

  Atomic Energy Research Institute, College of Science and Technology, Nihon University

• Akachi Tatsuo

  Instituto De Investigaciones En Materiales Universidad Nacional Autonoma De Mixico

• Akachi Tatsuo

  Instituto De Investigaciones En Materiales Universidad Nacional Autonoma

• Ogasawara Takeshi

  Atomic Energy Research Institute College Of Science And Technology Nihon University

関連論文

• Antiferromagnetism of Disilicides of Heavy Rare Earth Metals
• Magnetic Instabilities in High Field Superconductors
• Superconductivity at 90 K in the Y-Ba-Al-Cu-O System

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