STRUCTURE OF TWIN BOUNDARIES IN LA2-XBAXCUO4

被引：5

作者：

CAI, ZX ^{[1
]}

WELCH, DO ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973

来源：

PHYSICA C | 1994年 / 234卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(94)90588-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structure of the twin boundary in the low-temperature-orthorhombic (LTO) phase of La2-xBaxCuO4 is studied using a Landau-type free-energy model which reproduces the x-T phase diagram. We find that the twin boundaries that have the lowest free energy are those with low-temperature-tetragonal (LTT) structure in the center of the domain walls. Near the LTT-to-LTO phase-transition temperature, both the width as well as the density of the twin boundaries increase with decreasing temperature.

引用

页码：373 / 379

页数：7

共 12 条

[1] STRUCTURAL PHASE-TRANSFORMATIONS AND SUPERCONDUCTIVITY IN LA2-XBAXCUO4 [J].