Synthesis, characterization and melt processing of Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz superconductors

M. A.A. Moussa, M. Muralidhar, M. Izumi, M. Murakami

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Effects of a combined substitute of Yb and Nd on Y site on the superconducting properties of YBa2Cu3Oy have been studied. We synthesized Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz compound with x = 0.2, 0.4, 0.6, 0.8 and 1.0. Here, the ratio of Yb-Nd was fixed to be 9:1 for obtaining 123 phase without secondary phases. The melt processing thermal profiles for Y1-x(Yb0.9Nd0.1)x Ba2Cu3Oz with x = 0.2 and 0.4 and the addition of 40 mol% {Y1-x(Yb0.9Nd0.1) x}2BaCuO5 and 0.5 wt% Pt in air were determined onthe basis of the thermal analysis results. All samples showed a low grain growth rate, particularly for high x values, which may be partially ascribed to un-optimized thermal schedules. Although almost all the samples exhibited low Jc values, the sample with x = 0.2 exhibited Tc of 88.8 K and a relatively high Jc value of 16,000 A/cm 2 at 77 K for H//c-axis.

元の言語English
ページ(範囲)1211-1214
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
469
発行部数15-20
DOI
出版物ステータスPublished - 2009 10 15

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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