Geometric magnetic frustration in Ba2Sn2Ga3ZnCr7O22:: A two-dimensional spinel based Kagome lattice

被引：112

作者：

Hagemann, IS ^{[1
]}

Huang, Q

Gao, XPA

Ramirez, AP

Cava, RJ

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[2] Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA

[3] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA

[4] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[5] Bell Labs, Lucent Technol, Murray Hill, NJ 07574 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.86.894

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The properties of a two-dimensional geometrically frustrated magnetic material based on the Kagome net, Ba2Sn2ZnGa3Cr7O22, are reported. The Kagome net is fully filled with magnetic ions. A Curie Weiss theta theta (W) = -312 K is found with a spin glass transition at approximately 1.5 K, indicating strong geometrical magnetic frustration. This compound is the most two dimensional of a structural series with the geometrically frustrated materials ZnCr2O4 and SrCr8Ga4O19. The comparison of their properties tests the influence of different degrees of coupling between Kagome layers on magnetic frustration within a single chemical and structural family.

引用

页码：894 / 897

页数：4

共 11 条

[1] EXCHANGE INTERACTIONS IN FERROMAGNETIC CHROMIUM CHALCOGENIDE SPINELS [J].