Pinning properties in melt-processed YbBa2Cu3O7-δ with finely dispersed Yb2BaCuO5 inclusions

Tadashi Mochida, Naomichi Sakai, Sang Im Yoo, Masato Murakami

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We have studied the pinning characteristics of melt-processed Yb-Ba-Cu-O, in which Yb2BaCuO5 (Yb211) particles are dispersed in the YbBa2Cu3O7 (Yb123) matrix. The sample showed a sharp superconducting transition (Tc) with an onset value of 88.5 K. In spite of its low Tc in the RE123 families (RE=rare earth elements), the sample showed a large shielding current density of 5.5 × 108 A/m2 at 77 K and 0 T, which is comparable to those of melt-processed Y-Ba-Cu-O and OCMG-processed Nd-Ba-Cu-O. Analyses reveal that the dominant pinning center of melt-processed Yb-Ba-Cu-O bulk superconductors is Yb211 inclusions.

Original languageEnglish
Pages (from-to)229-237
Number of pages9
JournalPhysica C: Superconductivity and its applications
Volume366
Issue number4
DOIs
Publication statusPublished - 2002 Feb 1

Keywords

  • Irreversibility field
  • Melt-process
  • Nonsuperconducting inclusion
  • Pinning property
  • Yb-Ba-Cu-O

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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