Effects of Paramagnetic Impurities on Superconducting Properties in the La_<3-x>Gd_xAl System

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概要

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• Effects of the magnetic impurity on superconducting properties were investigated on the La_<3-xGd_xAl system. The superconducting transition temperature T_c, the upper critical field H_<c2> and the magnetic susceptibility in the normal state were measured for various concentrations of gadolinium. A remarkable departure of the T_c versus impurity concentration curve from the Abrikosov-Gor'kov curve was found in the region of high impurity concentrations (>0.4 at.% GD). Magnetic susceptibility versus temperature curves of compounds with Gd concentrations large enough to suppress the superconductivity showed no peak above 4.2°K. The H_<c2> versus temperature curve of the compound with 0.3 at.% Gd crossed the curve of La_3Al. The upper critical field at 0°K, H_<c2>(0), had a maximum at a certain Gd concentration near La_3Al. This fact is qualitatively explained by the theory of Fulde-Maki.

• 社団法人日本物理学会の論文
• 1969-09-05

著者

• SEKIZAWA Kazuko

  Department of Physics, College of Science and Technology, Nihon University

• Sekizawa Kazuko

  Department Of Physics College Of Science And Engineering Nihon University

• Sekizawa Kazuko

  Department Of Physics And Atomic Energy Research Institute College Of Science And Engineering Nihon

• YASUKOCHI Ko

  Department of Physics, Faculty of Science, University of Tokyo

• Yasukochi Ko

  Department Of Physics College Of Science And Engineering Nihon University

• Yasukochi Ko

  Department Of Physics And Atomic Energy Research Institute College Of Science And Engineering Nihon

• KUWASAWA Yoshinori

  Department of Physics, College of Science and Engineering, Nihon University

• USUI Nobumitsu

  Department of Physics, College of Science and Engineering, Nihon University

• Usui Nobumitsu

  Department Of Physics College Of Science And Engineering Nihon University

• Kuwasawa Yoshinori

  Department Of Physics College Of Science And Engineering Nihon University:(present Address) Departme

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