SUPERCONDUCTING YBCO SINGLE-CRYSTALS WITH MACROSCOPICALLY TETRAGONAL PHASE

被引：12

作者：

LIN, CT ^{[1
]}

CHROSCH, J ^{[1
]}

YAN, Y ^{[1
]}

LIANG, WY ^{[1
]}

SALJE, EKH ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,CAMBRIDGE CB3 0HE,ENGLAND

来源：

PHYSICA C | 1995年 / 242卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)02403-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have carried out a series of investigations in an attempt to demonstrate the existence of tweed tetragonal phase in oxygen-rich pure YBCO-(7-delta)(delta< 0.6). A technique for producing such a phase was developed which involved heating the fully oxygenated orthorhombic crystal to just above its orthorhombic-tetragonal phase transition temperature for a short period in a high-oxygen-partial-pressure environment, followed by rapid quenching to room temperature. X-ray rocking curves and electron microscopy studies provided the evidence of the tweed tetragonal phase, and AC susceptibility measurements confirmed these crystals to be superconducting with a sharp transition.

引用

页码：105 / 112

页数：8

共 27 条

[11] TWIN TO TWEED TRANSITION IN YBA2CU3O7-DELTA BY SUBSTITUTION OF AL FOR CU [J].