A STRUCTURAL PHASE-TRANSITION IN YBA2CU3O7 AT HIGH-PRESSURES

被引：9

作者：

AKHTAR, MJ ^{[1
]}

AKHTAR, ZN ^{[1
]}

CATLOW, CRA ^{[1
]}

机构：

[1] UCL ROYAL INST GREAT BRITAIN, DAVY FARADAY RES LAB, LONDON W1X 4BS, ENGLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 14期

关键词：

D O I：

10.1088/0953-8984/2/14/007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The authors have performed detailed high-pressure studies up to 110 kbar to investigate the nature of the structural phase of YBa2Cu 3O7 using energy-dispersive diffraction techniques. They observed a reversible orthorhombic to tetragonal phase transition at between 70 and 80 kbar. During compression it is found that the c axis has the highest compressibility; thus c/a decreases. A possible explanation for the relationship between the variation of structure with pressure and the transition temperature is given.

引用

页码：3231 / 3236

页数：6

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