A new technique for pinning enhancement in ternary REBa2Cu3Oy systems

研究成果: Article

11 引用 (Scopus)


We have studied the effects of sub-micron Gd2BaCuO5 (Gd-211) particles on the microstructure and the magnetic properties of ternary melt-textured superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu3 Oy, (Nd0.33Sm0.33Gd0.33)Ba2Cu3 Oy, and (Sm0.33Eu0.33Gd0.33)Ba2Cu3 Oy. High-resolution transmission electron microscopic observations showed that there is strong compositional fluctuation in the REBa2Cu3Oy matrix, and the RE rich clusters 3-10 nm in size are distributed in the matrix, which are the candidates for pinning centers. Magnetization measurements revealed that a strongly developed fishtail is observed in all the samples. The peak position, its height, and irreversibility field is dependent on the chemical composition. The NSG-123 sample with 10 mol% Gd-211 exhibited the critical current density of 100 kAcm-2 at 77 K and 2 T for H∥c-axis.

ジャーナルPhysica C: Superconductivity and its applications
発行部数PART 1
出版物ステータスPublished - 2002 10 1

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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