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

doi:10.1063/1.1312863

Flux pinning in ternary (Nd-Eu-Gd)Ba₂Cu₃O_7-δ: Optimization for the highest pinning

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

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The optimization of high-quality melt-processed ternary (Nd-Eu-Gd)Ba₂Cu₃O_7-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, J_c. The maximum J_c can be achieved in as-grown optimally annealed twinned sample with second phase precipitate without disturbing the twin influence.

Original language	English
Pages (from-to)	2033-2035
Number of pages	3
Journal	Applied Physics Letters
Volume	77
Issue number	13
DOIs	https://doi.org/10.1063/1.1312863
Publication status	Published - 2000 Sep 25
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AU - Murakami, M.

AU - Nakao, K.

AU - Koshizuka, N.

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