THE COMPARISON OF STRUCTURAL CHARACTERISTICS BETWEEN 2212 AND 2201 PHASES IN THE BI-SR-CA-CU-O SYSTEM

被引：0
|
作者：
ZHOU, GE [1 ]
LEI, S [1 ]
HUANG, YL [1 ]
YAO, LZ [1 ]
JIA, YB [1 ]
ZHANG, YH [1 ]
机构：
[1] CCSAT, WORLD LAB, BEIJING 100080, PEOPLES R CHINA
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 212卷 / 1-2期
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O59 [应用物理学];
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摘要：
The Laue and Bragg diffraction patterns of a Bi-based 2212-phase (Bi2Sr2CaCu2Oy) single crystal have been investigated by Laue photography using continuous radiation and monochromatic radiation, and compared with those of a Bi-based 2201-phase (Bi2Sr2CuOz) single crystal. It is found that there are a two-dimensional lattice and a three-dimensional lattice in the Bi-based 2212-phase crystal, which are structurally independent of each other. However, there is only a three-dimensional superlattice in the Bi-based 2201-phase crystal. Combining these results with the reported results of high-resolution electron microscope research, it is suggested that ''Bi-concentrated'' bands of the Bi-based 2201 phase have entirely entered into the lattice of the parent structure formed by CaCuO2 [1], but not of the Bi-based 2212 phase, i n which the ''Bi-concentrated'' band formed a lattice itself.
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页码：151 / 154
页数：4
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