Spin correlations in the bilayer manganite La1.2Sr1.8Mn2O7

被引：9

作者：

Chatterji, T

McIntyre, GJ

Suryanarayanan, R

Dhalenne, G

Revcolevschi, T

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[2] Max Planck Inst Phys Komplexer Syst, Dresden, Germany

[3] Univ Paris 11, CNRS, UA446, Chim Solides Lab, F-91405 Orsay, France

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 112卷 / 04期

关键词：

magnetically ordered materials; phase transitions; spin dynamics; neutron scattering;

D O I：

10.1016/S0038-1098(99)00329-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the spin correlations of the bilayer manganite La1.2Sr1.8Mn2O7, which shows colossal magnetoresistance (CMR) behaviour. Rod-like diffuse scattering parallel to (c) over right arrow* in the (hol) plane has been observed. We have determined the temperature variation of the in-plane correlation length from the (h, 0, 1.833) scan, which is perpendicular to the rod. The modulation of the diffuse-scattering intensity parallel to the rod in the scan (0.95, 0, l) above T-c shows that the two ferromagnetic Mn planes in the bilayer are ferromagnetically correlated. (C) 1999 Elsevier Science Ltd. All rights reserved.

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页码：235 / 239

页数：5

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