2020年2月
Strong flux pinning by columnar defects with directional dependent morphologies in GdBCO coated conductors irradiated with 80 MeV Xe ions
Japanese Journal of Applied Physics
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- 巻
- 59
- 号
- 2
- 開始ページ
- 023001-1
- 終了ページ
- 7
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.35848/1347-4065/ab6f2b
- 出版者・発行元
- IOP PUBLISHING LTD
We show that Xe ion irradiation with 80 MeV to GdBa(2)Cu(3)Oy-coated conductors creates different morphologies of columnar defects (CDs) depending on the irradiation angles theta(i) relative to the c-axis: continuous CDs with a larger diameter are formed for oblique irradiation at theta(i) = 45 degrees, whereas the same ion beam at a different angle (theta(i) = 0 degrees) 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 theta(i) = 0 degrees and +/- 45 degrees: discontinuous CDs at theta(i) = 0 degrees and crossed CDs at theta(i) = +/- 45 degrees provide correlated pinning in a wide angular range, which is more strongly enhanced by each other via the pinning of kinks. (C) 2020 The Japan Society of Applied Physics
- リンク情報
- ID情報
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- DOI : 10.35848/1347-4065/ab6f2b
- ISSN : 0021-4922
- eISSN : 1347-4065
- Web of Science ID : WOS:000537439900001