MICROSTRUCTURAL CHANGES INDUCED BY LATTICE INSTABILITIES IN LA2-XBAXCUO4 (X=0.125) AND ND2NIO4

被引：22

作者：

CHEN, CH

CHEONG, SW

WERDER, DJ

TAKAGI, H

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

PHYSICA C | 1993年 / 206卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90513-P

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the microstructural changes associated with the structural phase transition from a low-temperature orthorhombic phase to a low-temperature tetragonal phase in metallic La2-xBaxCuO4 and insulating Nd2NiO4. Employing electron microscopy, diffraction and dark field imaging the transition was found to be similar in both systems. Below the transition temperature a fine mixture exists of both tetragonal and orthorhombic domains. Details of microstructural changes of defect networks are compound specific. A simple model is also proposed to understand the microstructural changes observed in these two systems.

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页码：183 / 194

页数：12

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