Structural characteristics of 2212-phase single crystal in the Bi-Sr-Ca-Cu-O superconductor

被引：0

作者：

Guien, Zhou ^{[1
]}

Lei, Shi ^{[1
]}

Yunlan, Huang ^{[1
]}

Yunbo, Jia ^{[1
]}

Jiang, Lu ^{[1
]}

Genda, Gu ^{[1
]}

Weili, Cai ^{[1
]}

Yaozhong, Ruan ^{[1
]}

Yuheng, Zhang ^{[1
]}

机构：

[1] Univ of Science and Technology of, China, Hefei, China

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 1993年 / 32卷 / 02期

关键词：

Bismuth compounds - Ceramic materials - Crystal structure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A single crystal of Bi-Sr-Ca-Cu-O 2212 superconducting phase has been studied by combining the Laue method with the method of X-ray diffractometry. It is suggested that the single-crystal structure of a superconductor is a modulated structure of a three-dimensional period coexisting with a two-dimensional lattice. In the structure, the Bi-concentrated bands, which form a three-dimensional modulated structure that corresponds to the results observed in high-resolution electron microscopy, do not entirely enter the parent structure lattice, but divide the parent structure into oxygen-deficient pervoskitelike layers. The pervoskitelike layer has a quasi-two-dimensional structure. The element modulation of Sr and Ca appears in the two-dimensional lattice, which is caused by the effect of Bi-concentrated bands. Meanwhile, the superlattice is formed on the ab plane. The three-dimensional structure of periodic modulation is formed by the pervoskitelike layer and Bi-concentrated band as a unit.

引用

页码：774 / 777

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