Melt-processed light rare earth element-Ba-Cu-O

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

研究成果: Review article査読

547 被引用数 (Scopus)

抄録

Unlike Y123 which forms only a stoichiometric compound, the light rare earth elements (LREs: La, Nd, Sm, Eu, Gd) form a solid solution LRE1+xBa2-xCu3Oy. The presence of such solid solution caused a depression in the superconducting transition temperatures (Tc), particularly for La123, Nd123 and Sm123 when they are melt processed in air. Recently, we have found that the Tc of these LRE123 superconductors can greatly be enhanced when they are melt processed in a reduced oxygen atmosphere. Furthermore, Jc values of these superconductors were larger than that of a good quality Y123 superconductor in high magnetic fields at 77 K. In this article, on the basis of our study over the last several years, the melt processes for LRE-Ba-Cu-O are described, the microstructural and superconducting properties of the superconductors are reviewed and the flux pinning mechanism is also discussed.

本文言語English
ページ(範囲)1015-1032
ページ数18
ジャーナルSuperconductor Science and Technology
9
12
DOI
出版ステータスPublished - 1996 12 1
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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