CHARACTERIZATION OF (BI, PB)-SR-CA-CU-O SYSTEM BY ANALYTICAL ELECTRON-MICROSCOPY

被引：3

作者：

INOUE, Y

HASEGAWA, M

SHICHI, Y

MUNAKATA, F

YAMANAKA, M

HIYAMA, S

NITTONO, O

机构：

[1] SEIMI CHEM CO LTD,CHIGASAKI,KANAGAWA 253,JAPAN

[2] TOKYO INST TECHNOL,DEPT MET ENGN,OH OKAYAMA,MEGURO KU,TOKYO 152,JAPAN

来源：

JOURNAL OF MATERIALS RESEARCH | 1990年 / 5卷 / 04期

关键词：

D O I：

10.1557/JMR.1990.0737

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chemical compositions of superconductors of Bi1-x PbxSrCaCu1.8Oy(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−xPbxSrCaCu18Ov(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. © 1990, Materials Research Society. All rights reserved.

引用

页码：737 / 741

页数：5

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