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Microstructures of Bi-based oxide superconductors doped with Sb

Published online by Cambridge University Press:  31 January 2011

Yoshio Masuda ,
Rikuro Ogawa ,
Yoshio Kawate ,
Naohiro Hara  and
Tsuyoshi Tateishi
Yoshio Masuda
Affiliation:
Superconducting and Cryogenic Technology Center, Kobe Steel Ltd., 1-5-5, Takatsukadai Nishi-ku, Kobe 651-22, Japan
Rikuro Ogawa
Affiliation:
Superconducting and Cryogenic Technology Center, Kobe Steel Ltd., 1-5-5, Takatsukadai Nishi-ku, Kobe 651-22, Japan
Yoshio Kawate
Affiliation:
Superconducting and Cryogenic Technology Center, Kobe Steel Ltd., 1-5-5, Takatsukadai Nishi-ku, Kobe 651-22, Japan
Naohiro Hara
Affiliation:
Kobelco Institute Co., Wakinohama Chuo-Ku, Kobe 651, Japan
Tsuyoshi Tateishi
Affiliation:
Kobelco Institute Co., Wakinohama Chuo-Ku, Kobe 651, Japan
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Abstract

Using Bi-based oxide superconductors of the Bi0.96Pb0.24-xSbxSr1.0Ca 1.1 Cu1.6Oy composition which were prepared by the sol-gel method, production of the high-Tc phase and also microstructures of the high-Tc and the low-Tc phases were investigated using the XRD method and the TEM technique. Two superconducting phases showed good linearities of shrinkages of the a, b, and c lattice parameters as the Sb content increased, and so it has been found that Sb can be included in superconducting crystal structures. However, all shrinkages were below 1%. The activation energy of Sb diffusion was estimated from time dependence of changes of the lattice parameters using the Arrhenius plots. Its energy was from 510 to 593 Kj/mol.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 10 , October 1992 , pp. 2667 - 2672
Copyright
Copyright © Materials Research Society 1992

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References

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