Flux pinning in ternary (Nd-Eu-Gd)Ba2Cu3O7-δ: Optimization for the highest pinning

A. K. Pradhan, M. Muralidhar, Y. Feng, M. Murakami, K. Nakao, N. Koshizuka

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The optimization of high-quality melt-processed ternary (Nd-Eu-Gd)Ba2Cu3O7-δ composite samples has been carried out to achieve the largest pinning. Our results suggest that the interaction between the twin planes and the fine second-phase precipitate forms a strongly pinned entangled vortex liquid in which vortices are correlated along the c axis. This pinned vortex liquid freezes into a glassy state at low temperature rendering high critical current density, Jc. The maximum Jc can be achieved in as-grown optimally annealed twinned sample with second phase precipitate without disturbing the twin influence.

Original languageEnglish
Pages (from-to)2033-2035
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number13
DOIs
Publication statusPublished - 2000 Sep 25

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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