Flux pinning in ternary (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy melt-processed superconductors

M. R. Koblischka, M. Muralidhar, M. Murakami

研究成果: Article査読

66 被引用数 (Scopus)

抄録

The flux pinning characteristics of ternary melt-processed (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG) superconductors are studied in the temperature range 60≤T≤90K. NEG samples exhibit a strongly developed peak effect in the dependence of the critical current densities on the external field, Ha. The scaling of the pinning forces versus the reduced field h=Ha/Hirr (where Hirr denotes the irreversibility field) yields a peak at h0=0.5 which is an indication of pinning provided by a spatial variation of the transition temperature. The presence of a weaker superconducting second phase is demonstrated by means of field cooling and warming experiments in fields up to 7 T. Furthermore, we discuss the possible effect of the magnetic moments of Gd and Nd on the flux pinning.

本文言語English
ページ(範囲)2351-2353
ページ数3
ジャーナルApplied Physics Letters
73
16
DOI
出版ステータスPublished - 1998
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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