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Orientation mechanism of liquid phase epitaxial grown YBa2Cu3O7-y film

  • Tasuku Kitamura
  • Manabu Yoshida
  • Yuichi Ikuhara
  • Yuh Shiohara
  • Izumi Hirabayashi
  • Shoji Tanaka
Conference paper

Abstract

Superconducting YBa2Cu3Oy films were grown by liquid-phase epitaxy (LPE) on NdGaO3(l10) single-crystalline substrate by a modified top-seeded crystal growth method. Two different melt compositions were used. In the case of Cu-poor melt composition (Ba:Cu=3.0:5.0), only c-axis oriented growth was observed. However, if we used Cu-rich melt composition (Ba:Cu=3.0:6.5), both c-axis and a-axis oriented films were obtained. In the latter case the crystalline orientation of YBa2Cu3Oy films was dependent on the temperature of the surface of the melt. At lower temperatures, c-axis orientation films were obtained, whereas the films showed a-axis orientation at higher temperatures. The width of transition temperature range of orientation is very narrow, less than 3 °C, compared to the width observed in the conventional vapor phase depositions (which is typically 50 °C). We propose that orientation change in the liquid phase epitaxial growth is determined by the unique properties of the phase diagram of Y-Ba-Cu-O-system.

Keywords

Substrate Temperature Minimum Free Energy Liquid Phase Epitaxy Orientation Change Growth Interface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Tokyo 1995

Authors and Affiliations

  • Tasuku Kitamura
    • 1
  • Manabu Yoshida
    • 1
  • Yuichi Ikuhara
    • 2
  • Yuh Shiohara
    • 1
  • Izumi Hirabayashi
    • 1
  • Shoji Tanaka
    • 1
  1. 1.Superconductivity Research LaboratoryISTECNagoya, 456Japan
  2. 2.Japan Fine Ceramics CenterNagoya, 456Japan

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