Effect of BaHfO3 introduction on the transport current at the grain boundaries in SmBa2Cu3Oy films

Akihiro Tsuruta, Yutaka Yoshida, Yusuke Ichino, Ataru Ichinose, Shunya Watanabe, Tomoya Horide, Kaname Matsumoto, Satoshi Awaji

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14 Citations (Scopus)

Abstract

We report the effect of BaHfO3 (BHO) introduction into SmBa2Cu3Oy (SmBCO) films on the transport properties at artificial grain boundaries (AGBs) by comparing pure SmBCO and BHO-doped SmBCO films deposited on bicrystal substrates. Improvement of the critical current density (Jc) at the AGB of BHO-doped SmBCO films was con firmed under the magnetic fields at which Jc was restricted at the AGB. By investigating the superconducting properties and from TEM observations, we found that the in-field Jc value for BHO-doped SmBCO films was improved through flux pinning of the Abrikosov-Josephson vortices by BHO nanorods.

Original languageEnglish
Article number033101
JournalApplied Physics Express
Volume8
Issue number3
DOIs
Publication statusPublished - 2015 Mar 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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