THE CRYSTAL AND MAGNETIC-STRUCTURES OF CA2CR0.5FE1.5O5 AT 2.1 K

被引：22

作者：

BATTLE, PD ^{[1
]}

BOLLEN, SK ^{[1
]}

GIBB, TC ^{[1
]}

MATSUO, M ^{[1
]}

机构：

[1] UNIV LEEDS,SCH CHEM,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 90卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/0022-4596(91)90169-I

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The crystal and magnetic structures of the brownmillerite Ca2Cr0.5Fe1.5O5 have been refined from neutron powder diffraction data collected at 2.1 K, space group Pnma, a = 5.4083(1) Å, b = 14.6561(3) Å, c = 5.5923(1) Å. The 4-coordinate cation sites are occupied only by iron; the 6-coordinate sites are occupied by a random 1 : 1 distribution of iron and chromium. The compound shows G-type antiferromagnetism at 2.1 K with average ordered magnetic moments of 3.23(4) and 3.95(5)μB, aligned along x̂, at the 6- and 4-coordinate sites respectively. © 1991.

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页码：42 / 46

页数：5

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