Growth and superconducting properties of YBa2Cu3O7 films on silver substrates by MOCVD in magnetic fields

Yanwei Ma, Kazuo Watanabe, Satoshi Awaji, Mitsuhiro Motokawa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

YBa2Cu3O7 (YBCO) films were grown on polycrystalline silver substrates by metalorganic chemical vapor deposition (MOCVD) in high magnetic fields. It is demonstrated that a magnetic field affected the microstructure of the films on polycrystalline silver substrates. Large square-shaped grains were observed in the 0 T films. The grain size was drastically reduced by application of a few tesla fields, then changed to small grains with an irregular shape above 4 T. Furthermore, it is found that application of a large magnetic field during the deposition improved the crystallinity and grain connectivity of YBCO films, leading to the improvement of the critical current density Jc.

Original languageEnglish
Pages (from-to)337-340
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume357-360
DOIs
Publication statusPublished - 2001 Sep

Keywords

  • Chemical vapor deposition
  • Magnetic field
  • Silver particles
  • YBaCuO films

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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