Highly Textured Superconducting Bi-Sr-Ca-Cu-O Crystals Prepared by the Vertical Bridgman Method

  • T. Izumi
  • T. Oyama
  • Y. Shiohara


The effects of temperature gradient(G) and growth rate(R) on characteristics of unidirectionally grown crystals by the vertical Bridgman method were investigated. Main phases in all samples were recognized as follows; (Sr0.6Ca0.4)CuO2 (primary phase), Bi2(Sr,Ca)3Cu2Ox, and Bi2(Sr,Ca)2CuOx (secondary mixture phases). The orientation on all phases were improved with increasing the G/R ratio. A large primary phase was grown and the fraction of Bi2(Sr,Ca)3Cu2Ox in secondary mixture phases were increased with increasing 1/(GR) value.


Primary Phase Ratio Dependence Primary Crystal Short Axis Length Vertical Bridgman Method 
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Copyright information

© Springer Japan 1990

Authors and Affiliations

  • T. Izumi
    • 1
  • T. Oyama
    • 1
  • Y. Shiohara
    • 1
  1. 1.Superconductivity Research LaboratoryInternational Superconductivity Technology CenterKoto-ku, Tokyo 135Japan

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