Correlated Pinning Behavior in ErBa2Cu3Oy Films with Columnar Defects

Masafumi Namba; Satoshi Awaji; Kazuo Watanabe; Hideki Kai; Masashi Mukaida; Satoru Okayasu

doi:10.1143/APEX.2.113002

Correlated Pinning Behavior in ErBa₂Cu₃O_y Films with Columnar Defects

Masafumi Namba, Satoshi Awaji, Kazuo Watanabe, Hideki Kai, Masashi Mukaida, Satoru Okayasu

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

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Abstract

In this study c-axis-correlated pinning centers which are known to increase the critical current density (J_c) for B || c-axis were produced by heavy-ion-irradiation in REBa₂Cu₃O_y (RE: rare earth element RE123) coated conductors and the subsequent changes in J _c were measured. A peak in the angular dependence of J_c induced by the defects was observed for applied magnetic fields of up to 13T for Er123 films with matching fields of B_φ = 0.1 and 1 T. We found that the columnar defects led to improvements in J_c even under applied magnetic fields more than 130 times higher than B_φ.

Original language	English
Article number	113002
Journal	Applied Physics Express
Volume	2
Issue number	11
DOIs	https://doi.org/10.1143/APEX.2.113002
Publication status	Published - Nov 2009

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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abstract = "In this study c-axis-correlated pinning centers which are known to increase the critical current density (Jc) for B || c-axis were produced by heavy-ion-irradiation in REBa2Cu3Oy (RE: rare earth element RE123) coated conductors and the subsequent changes in J c were measured. A peak in the angular dependence of Jc induced by the defects was observed for applied magnetic fields of up to 13T for Er123 films with matching fields of Bφ = 0.1 and 1 T. We found that the columnar defects led to improvements in Jc even under applied magnetic fields more than 130 times higher than Bφ.",

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AU - Namba, Masafumi

AU - Awaji, Satoshi

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AU - Kai, Hideki

AU - Mukaida, Masashi

AU - Okayasu, Satoru

PY - 2009/11

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AB - In this study c-axis-correlated pinning centers which are known to increase the critical current density (Jc) for B || c-axis were produced by heavy-ion-irradiation in REBa2Cu3Oy (RE: rare earth element RE123) coated conductors and the subsequent changes in J c were measured. A peak in the angular dependence of Jc induced by the defects was observed for applied magnetic fields of up to 13T for Er123 films with matching fields of Bφ = 0.1 and 1 T. We found that the columnar defects led to improvements in Jc even under applied magnetic fields more than 130 times higher than Bφ.

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Correlated Pinning Behavior in ErBa₂Cu₃O_y Films with Columnar Defects

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