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Characterization of (Bi, Pb)-Sr-Ca-Cu-O system by analytical electron microscopy

Published online by Cambridge University Press:  31 January 2011

Yasuhide Inoue ,
Masahiro Hasegawa ,
Yushi Shichi ,
Fumio Munakata ,
Mitsugu Yamanaka ,
Susumu Hiyama  and
Osamu Nittono
Yasuhide Inoue
Affiliation:
Central Engineering Laboratories, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka, Kanagawa 237, Japan
Masahiro Hasegawa
Affiliation:
Central Engineering Laboratories, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka, Kanagawa 237, Japan
Yushi Shichi
Affiliation:
Central Engineering Laboratories, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka, Kanagawa 237, Japan
Fumio Munakata
Affiliation:
Central Engineering Laboratories, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka, Kanagawa 237, Japan
Mitsugu Yamanaka
Affiliation:
Central Engineering Laboratories, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka, Kanagawa 237, Japan
Susumu Hiyama
Affiliation:
Seimi Chemical Co., Ltd., 3-2-10, Chigasaki, Chigasaki, Kanagawa 253, Japan
Osamu Nittono
Affiliation:
Department of Metallurgical Engineering, Tokyo Institute of Technology, Oh-okayama, Meguro-ku, Tokyo 152, Japan
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Abstract

Chemical compositions of superconductors of Bi1−xPbxSrCaCu1.8Oy (x = 0.1, 0.3, and 0.5) were investigated by analytical electron microscopy (AEM) supplemented by electron microprobe analysis. Samples were prepared by a solid state reaction method under oxygen partial pressures of 0.20 and 0.077 atm. The high-Tc phase appeared only in the samples of Bi1−xPbxSrCaCu1.8Oy (x = 0.1 and 0.3) prepared under an oxygen partial pressure of 0.077 atm. In the samples containing the high-Tc phase, stacking structures of 2, 3, and 4 perovskite layers were observed by transmission electron microscopy (TEM). From AEM analysis, it was shown that in order to make the high-Tc phase, the substitution ratio of Pb for Bi was about 0.2.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 4 , April 1990 , pp. 737 - 741
Copyright
Copyright © Materials Research Society 1990

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References

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