Microstructure and crystallization mechanism of YBa2Cu3O7-y films formed by advanced TFA-MOD process

J. Matsuda, K. Nakaoka, R. Teranishi, Y. Kitoh, Y. Aoki, H. Fuji, Y. Yamada, T. Izumi, Y. Shiohara

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We have investigated the effects of a heating rate in the calcination process on microstructures of YBa2Cu3O7-y (YBCO) precursor and final films. As a result, it was found CuO segregation in the YBCO precursor film, when the precursor was prepared at a rapid heating rate in the calcination. In the case of heating this precursor film in the crystallization process, many large pores and misoriented YBCO crystals tend to remain in the YBCO final film and its IC value deteriorates compared with the case of crystallizing the precursor, which is prepared at the slow heating rate in the calcination. It is important to control the heating rate in the calcination, in order to attain higher JC of the YBCO final films.

Original languageEnglish
Pages (from-to)563-569
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume445-448
Issue number1-2
DOIs
Publication statusPublished - Oct 1 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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