Magnetic ordering in the kagome lattice antiferromagnet KCr3(OD)6(SO4)2 -: art. no. 054421

被引：31

作者：

Inami, T ^{[1
]}

Morimoto, T

Nishiyama, M

Maegawa, S

Oka, Y

Okumura, H

机构：

[1] Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan

[2] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan

[3] Kyoto Univ, Fac Integrated Human Studies, Kyoto 6068501, Japan

[4] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.64.054421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the magnetic susceptibility and neutron powder diffraction revealed that the kagome lattice antiferromagnet KCr3(OD)(6)(SO4)(2) exhibits clear long-range magnetic order at T-N= 4.0 K in contrast to previous reports. The ordered magnetic structure is found to be the so-called q=0 type 120 degrees structure on the kagome lattice. A model which satisfies the observed magnetic intensity is, however, that the direction of the ordered moments, which form a nearly coplanar 120 degrees ground state, distribute uniformly in the ab plane. We propose a q=0 structure fluctuating slowly around the c axis as a ground state. This explanation may give a reasonable account for the obtained magnetic structure and the sample dependence.

引用

页数：6

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