LONG-PERIOD SHEAR STRUCTURE IN OXYGEN DEFICIENT LA2CUO4-DELTA

被引：14

作者：

VANTENDELOO, G

AMELINCKX, S

机构：

[1] University of Antwerp (RUCA), B-2020 Antwerpen

来源：

PHYSICA C | 1991年 / 176卷 / 4-6期

关键词：

D O I：

10.1016/0921-4534(91)90066-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A long-period shear structure of La2CuO4 has been determined using electron diffraction and high-resolution electron microscopy. The shear planes are formed by edge-sharing CuO6 octahedra; they are parallel with the (111)o planes of the orthorhombic basic structure. In successive domain strips the orthorhombic a(o) and c(o) axes are interchanged. The monoclinic shear structure has lattice parameters: a(m) = 0.66 nm; b(m) = 0.76 nm; c(m) = 2.66 nm; beta = 103-degrees; its space group is P12/c1 above the T --> 0 transition temperature (560 K) and P1c1 below this temperature.

引用

页码：575 / 595

页数：21

共 14 条

[1] PREPARATION AND CHARACTERIZATION OF ALKALINE-EARTH SUBSTITUTED SUPERCONDUCTING LA2CUO4 [J].