PHASE TRANSITIONS AND SUPERCONDUCTIVITY OF THE Y1Ba2Cu3O9 - x COMPOUNDS.

被引：0

作者：

Pang, Dexing ^{[1
]}

Yang, Zhongjin ^{[1
]}

Chen, Daolun ^{[1
]}

Wang, Litian ^{[1
]}

Qiao, Guiwen ^{[1
]}

机构：

[1] Acad Sinica, Shenyang, China, Acad Sinica, Shenyang, China

来源：

Materials Letters | 1987年 / 6卷 / 11-12期

关键词：

CERAMIC MATERIALS - Electric Conductivity - CRYSTALS - Structure - OXIDES - Crystalline;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The phase transitions and superconductivity were investigated in the Y-Ba-Cu-O system. The results show that the sequence of the transitions may be considered to be from orthorhombic (I) through orthorhombic (II), to tetragonal phases with an increase in temperature; the abundance of oxygen in grain boundaries may affect the strain field and the T//c. Generally, for Y//1Ba//2Cu//3O//9// minus //x compounds, the cooling conditions control the phase transition process and determine the T//c of superconductors.

引用

页码：436 / 438