High critical current density and its magnetic fields dependence in (Sm,Eu,Gd)Ba2Cu3Oy films by using multiple targets

Yuya Takahashi, Akihiro Tsuruta, Yusuke Ichino, Yutaka Yoshida, Satoshi Awaji, Ataru Ichinose, Kaname Matsumoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Melt textured bulks of (Sm0.33Eu0.33Gd 0.33)Ba2Cu3Oy (SEG123) show high Jc compared with that of YBa2Cu3Oy (Y123), because of nanoscopic network consisting of crossing rare earth (RE) compositional stripes. In this study, we fabricated SEG123 films by using pulsed laser deposition (PLD) method on LaAlO3 (LAO) substrates and evaluated the Jc and Tc in magnetic field. Jc of the SEG123 film was typically 1.4 MA/cm2 at 77 K in self-field. Jc in self-field of SEG123, Y123 and Sm123 films were almost the same value, however, Jc in magnetic fields showed a notable difference. The Jc of SEG123 film were 62.7 kA/cm2 at 5 T. We conclude that the Jc in magnetic fields were improved by RE-rich particle made of RE/Ba substitution acting as 3-dimensional pinning centers. Moreover we have confirmed that the superconducting properties changes by varying Sm, Eu and Gd composition ratio.

Original languageEnglish
Pages (from-to)130-133
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume484
DOIs
Publication statusPublished - 2013 Jan 15

Keywords

  • Films
  • Low temperature growth
  • Pinning
  • REBaCuO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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