Flux pinning in melt grown LRE123 superconductors

M. Murakami, N. Sakai, T. Higuchi, N. Chikumoto, S. I. Yoo

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Abstract

Unlike Y123 which forms only a stoichiometric compound, the light rare earth elements (LRE: La, Nd, Sm, Eu, Gd) form a solid solution LRE1+xBa2-xCu3Oy. When LRE123 superconductors are melt-processed in a reduced oxygen atmosphere, they exhibit high Tc's and large Jc values in high magnetic fields associated with a second peak effect. We believe that such a behavior is closely related to the presence of a LRE-Ba solid solution. In this paper we propose the flux pinning mechanism of LRE 123, and then discuss the source of the peak effect.

Original languageEnglish
Pages (from-to)1751-1760
Number of pages10
JournalJournal of Low Temperature Physics
Volume105
Issue number5-6
DOIs
Publication statusPublished - 1996 Jan 1

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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