Superconducting properties and microstructures of Er-Ba-Cu-O superconductor

K. Iida, J. Yoshioka, N. Sakai, M. Murakami

研究成果: Article査読

5 被引用数 (Scopus)

抄録

The growth rate of Er-Ba-Cu-O bulk superconductor as a function for undercooling was investigated using an isothermal solidification technique. The behaviour of the growth rate of Er-Ba-Cu-O under various undercooling was similar to that of Y-Ba-Cu-O. Furthermore, macro-segregation of Er211 was also observed in the a and c growth regions. However, macro-segregation of Er211 was not observed in the Er123 crystal fabricated by a continual slow cooling method far from the seed crystal. The optimum concentration of Er211 was determined to be Er123:Er211 = 3:1 on the basis of microstructure analysis and SQUID measurements. Furthermore, the trapped field capability as well as the critical current density of Er-Ba-Cu-O bulk superconductor with an optimum composition fabricated by a continual slow cooling method employing very small particles of Er211 was dramatically improved.

本文言語English
ページ(範囲)699-706
ページ数8
ジャーナルSuperconductor Science and Technology
16
6
DOI
出版ステータスPublished - 2003 6 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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