CRYSTAL BOUNDARIES AND EXTENDED DEFECTS IN THE 79-K SUPERCONDUCTOR PB1.4BI0.6SR2Y0.5CA0.5CU3O8+DELTA

被引：2
|
作者：
HERVIEU, M
CAIGNAERT, V
RETOUX, R
RAVEAU, B
机构：
[1] Laboratoire de Cristallographie et Sciences des Matériaux, CRISMAT, ISMRA, 14032 Caen Cedex, Bd Maréchal Juin
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1990年 / 6卷 / 04期
关键词：
D O I：
10.1016/0921-5107(90)90118-U
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A high resolution electron microscopy study of the 79 K superconductor Pb1.4Bi0.6Sr2Y0.5Ca0.5 Cu3-O8+δ shows that, in contrast with Pb2Sr2Ca0.5Y0.5-Cu3 O8+δ, no intergrowth defect affects the layer stacking. However, in many crystals, antiphase boundaries, twinning phenomena and "tilt" boundaries are observed which appear with a rather low frequency. Structural models are proposed for these different boundaries and their influences upon the superconducting properties of this oxide are discussed. © 1990.
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页码：211 / 219
页数：9
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