GRAIN-BOUNDARIES AND DEFECTS IN SUPERCONDUCTING BI-SR-CA-CU-O CERAMICS

被引：27

作者：

RAMESH, R ^{[1
]}

BAGLEY, BG ^{[1
]}

TARASCON, JM ^{[1
]}

GREEN, SM ^{[1
]}

RUDEE, ML ^{[1
]}

LUO, HL ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,DEPT ELECT & COMP ENGN,LA JOLLA,CA 92093

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 67卷 / 01期

关键词：

D O I：

10.1063/1.345266

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Defects and structural interfaces in superconducting Bi-Sr-Ca-Cu-O have been characterized by transmission electron microscopy. The superconducting phase exhibits frequent variations in the stacking sequence (polytypoids). Dislocations, observed inside the grains, either introduce or accommodate the shear in the a-b plane and the local composition fluctuations. In general, the grains exhibit a platelike morphology with the a-b plane as the grain boundary plane. Grain boundaries along the short edge are generally disordered, whereas those near the long edge generally have a thin layer of the lower Tc polytypoid. Coherent intragranular boundaries are also observed.

引用

页码：379 / 387

页数：9