COMPOSITION OF PHASES AND PHASE MIXTURES OF THE BI-SR-CA-CU-O SYSTEM

被引：23
|
作者：
BOHACEK, P
PRACHAROVA, J
CIVIS, S
SICHOVA, H
FENDRYCH, F
TRUNDA, B
DOBIASOVA, L
VALVODA, V
机构：
[1] INST RAW MAT, CS-28401 KUTNA HORA, CZECHOSLOVAKIA
[2] CHARLES UNIV, FAC MATH & PHYS, CS-12000 PRAGUE 2, CZECHOSLOVAKIA
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1990年 / 171卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(90)90462-N
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Ceramic samples of nominal composition of BiSrCaCu2O5.5 were analyzed by an electron microscope equipped with an EDAX system. Compositions of phases C37, C30 and C24 (denoted according to the height of their elemental cells) were found to be Bi2.4Sr1.6Ca2Cu3Oy , Bi2.4Sr1.6CaCu2Oy and Bi2.4Sr1.6-kCakCuOy (k=0.4- 1.2) respectively. In most of analyzed volumes of the size of several cubic micrometers, mixtures of two or of all three phases have been found. A mechanism of formation of the C37 phase and of the phase mixtures is proposed. © 1990.
引用
收藏
页码：108 / 120
页数：13
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