Flux pinning in melt-processed ternary (Nd-Eu-Gd) and Nd-based superconductors

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

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

We report on the flux pinning and optimization of melt-processed ternary (Nd-Eu-Gd)Ba2Cu3O7-δ bulk materials using magnetization and magneto-transport (quasi-flux transformer technique) measurements. The highest flux pinning was observed for the optimal annealing condition, where twin planes act as correlated pinning in the presence of the optimal second-phase addition. The addition of Ag decreases low-field critical current density, whereas high-field behavior does not change drastically. The results were compared with NdBa2Cu3O7-δ single crystals that show various vortex states with increasing defect density. The melt-processed samples demonstrate very similar behavior to the single crystal. The interplay between the point defect and the twin planes resulting an entangled vortex liquid-state remains valid for both single crystals and melt-processed samples.

本文言語English
ページ(範囲)3706-3711
ページ数6
ジャーナルIEEE Transactions on Applied Superconductivity
11
1 III
DOI
出版ステータスPublished - 2001 3
外部発表はい
イベント2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
継続期間: 2000 9 172000 9 22

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

フィンガープリント

「Flux pinning in melt-processed ternary (Nd-Eu-Gd) and Nd-based superconductors」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル