Correlated Pinning Behavior in ErBa2Cu3Oy Films with Columnar Defects

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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Article number113002
JournalApplied Physics Express
Issue number11
Publication statusPublished - 2009 Nov


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