TWINNING OF HIGH-Tc Ba2YCu3O7 - x OXIDES.

被引：0

作者：

Iijima, Sumio ^{[1
]}

Ichihashi, Toshinari ^{[1
]}

Kubo, Yoshimi ^{[1
]}

Tabuchi, Junji ^{[1
]}

机构：

[1] NEC Corp, Kawasaki, Jpn, NEC Corp, Kawasaki, Jpn

来源：

Japanese Journal of Applied Physics, Part 2: Letters | 1987年 / 26卷 / 09期

关键词：

BARIUM COMPOUNDS - Electric Conductivity - CERAMIC MATERIALS - CRYSTALS - Structure - MICROSCOPIC EXAMINATION - Scanning Electron Microscopy;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Orthorhombic crystallites of the high-T//c superconductor Ba//2YCu//3O//7// minus //x oxide prepared by the standard sintering technique are heavily laminated by twinning on (110) lattice planes. Upon heating these crystals under a vacuum in an electron microscope, the orthorhombic structure transformed irreversibly to a tetragonal one. Between these two forms, a transitional orthorhombic form was observed. This irreversible transformation seems to be caused by a lack of oxygen in the evacuated microscope.

引用

页码：1478 / 1481

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