Flux pinning properties of (Nd,Eu,Gd)Ba2Cu3O y (NEG-123) superconductor with 211 phase particles

Mohammed N. Hasan, Masaru Kiuchi, Edmund S. Otabe, Teruo Matsushita, Miryala Muralidhar

研究成果: Article査読

22 被引用数 (Scopus)


Flux pinning properties were investigated by focusing on the origin of the high peak critical current density and the high irreversibility field for Nd0.33Eu0.38Gd0.28Ba2Cu 3Oy (NEG-123) bulk superconductors with the addition of 211 secondary phase particles of volume fractions up to 10mol%. It was found that a negative correlation exists between the peak critical current density Jcp and the irreversibility field Bi for various fractions of added 211 phase. This suggests that the mechanisms that determine J cp and Bi are different. The 211 particles do not contribute to the peak effect neither directly through the pinning mechanisms of the condensation energy interaction nor indirectly with the aid of the order-disorder transition of flux lines. Other possible defects are nano-lamella structures. Although these defects do not directly contribute to the peak effect through the pinning mechanism of the condensation energy interaction, they may contribute to it with the aid of the order-disorder transition of flux lines. On the other hand, as Bi deteriorates with the addition of 211 particles, it is not determined by the flux pinning of 211 particles. The decrease in Bi is considered to be caused by the proximity effect of nano-lamella structures.

ジャーナルSuperconductor Science and Technology
出版ステータスPublished - 2007 4 1

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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