ON THE POSSIBILITY OF EQUILIBRIUM TWEED MICROSTRUCTURE IN TETRAGONAL YBA2CU3O7 SUPERCONDUCTORS

被引：4
作者：
VUL, DA [1 ]
TSATSKIS, I [1 ]
SALJE, EKH [1 ]
机构：
[1] INTERDISCIPLINARY RES CTR SUPERCONDUCT,CAMBRIDGE CB3 0HE,ENGLAND
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 1995年 / 72卷 / 05期
关键词：
D O I：
10.1080/09500839508242464
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The role of elastic interactions in equilibrium correlations of oxygen distribution in YBa2Cu3O7 crystals is investigated. In a broad temperature interval of about 200 K above the tetragonal-orthorhombic transition temperature, a strong tendency for the formation of highly correlated sheet-like regions perpendicular to the [110] directions was found. The correlated oxygen distribution produces an anomalously high amplitude of shear displacement waves [110]/[1 (1) over bar 0] characteristic of a 'tweed' microstructure. The elastic diffuse scattering from the predicted equilibrium tweed microstructure is analysed.
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页码：277 / 284
页数：8
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