LASRCUALO5 - A NEW OXYGEN-DEFICIENT PEROVSKITE STRUCTURE

被引：14

作者：

WILEY, JB

SABAT, M

HWU, SJ

POEPPELMEIER, KR

RELLER, A

WILLIAMS, T

机构：

[1] NORTHWESTERN UNIV,MAT RES CTR,DEPT CHEM,EVANSTON,IL 60208

[2] UNIV ZURICH,INST ANORGAN CHEM,CH-8006 ZURICH,SWITZERLAND

[3] NORTHWESTERN UNIV,SCI & TECHNOL CTR SUPERCONDUCT,CHICAGO,IL 60611

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1990年 / 88卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-4596(90)90222-J

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new oxygen-deficient perovskite, LaSrCuAlO5, has been prepared. The compound crystallizes in the orthorhombic crystal system with the space group Pbcm. The unit cell dimensions (Z = 4) are a = 7.9219(6), b = 11.020(1), and c = 5.4235(4) Å. The compound is a layered copper oxide with a structure related to that of the mineral brownmillerite. Important structural features include buckled copper oxygen planes and nonmagnetic, insulating aluminum-oxygen chains that alternate with the copper oxygen planes along the 7.9-Å axis. Resistivity measurements show that LaSrCuAlO5 is a semiconductor (ρ{variant}300 K = 0.065 Ω cm) and magnetic susceptibility measurements demonstrate that the compound is paramagnetic down to 4 K. © 1990.

引用

页码：250 / 260

页数：11

共 29 条

[1] STRUCTURE DU FERRITE BICALCIQUE ET DE LA BROWNMILLERITE [J].