Effect of mixing three rare-earth elements on the superconducting properties of REBa2Cu3Oy

M. Muralidhar, H. S. Chauhan, T. Saitoh, K. Kamada, K. Segawa, M. Murakami

研究成果: Article査読

103 被引用数 (Scopus)

抄録

We report the effect of mixing three rare-earth (RE) elements in the RE site on the superconducting properties of melt-processed REBa2Cu3Oy, in which RE elements are selected from the group of Nd, Sm, Eu and Gd. The heat treatment profiles for melt processing were determined according to the peritectic decomposition temperatures obtained from the thermal analysis measurements. Microstructural observations and compositional analysis showed that the main phase was (R10.33R20.33R30.33)Ba2Cu 3Oy, in which the ratio of three RE elements (R1, R2, R3) was equal to that of the nominal composition, indicating that mixing of RE elements was uniform. All the samples showed relatively high Tc in the range 93.1-95.3 K and exhibited the secondary peak effect in the magnetization curves at 77 K with the irreversibility field higher than that of melt-processed Y-Ba-Cu-O. A high Jc value of 50 000 A cm-2 at 77 K and 2 T was achieved in (Nd, Eu, Gd)Ba2Cu3Oy for field parallel to the c-axis.

本文言語English
ページ(範囲)663-670
ページ数8
ジャーナルSuperconductor Science and Technology
10
9
DOI
出版ステータスPublished - 1997 9月 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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