Strong flux pinning by columnar defects with directionally dependent morphologies in GdBCO-coated conductors irradiated with 80 MeV Xe ions

Tetsuro Sueyoshi, Tetsuya Kotaki, Yuichi Furuki, Takanori Fujiyoshi, Satoshi Semboshi, Toshinori Ozaki, Hitoshi Sakane, Masaki Kudo, Kazuhiro Yasuda, Norito Ishikawa

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

We show that Xe ion irradiation with 80 MeV to GdBa2Cu3Oy-coated conductors creates different morphologies of columnar defects (CDs) depending on the irradiation angles θ i relative to the c-axis: continuous CDs with a larger diameter are formed for oblique irradiation at θ i = 45°, whereas the same ion beam at a different angle (θ i = 0°) induces the formation of discontinuous CDs. The direction-dependent morphologies of CDs significantly affect the angular behavior of the critical current density J c. In particular, low-energy irradiation defects induce further improvement of J c in a unique combination of irradiation angles of θ i = 0° and ±45°: discontinuous CDs at θ i = 0° and crossed CDs at θ i = ±45° provide correlated pinning in a wide angular range, which is more strongly enhanced by each other via the pinning of kinks.

本文言語英語
論文番号023001
ジャーナルJapanese journal of applied physics
59
2
DOI
出版ステータス出版済み - 2020

All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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