MAGNETIC EXCITATIONS IN ERCO2

被引：2

作者：

KOON, NC ^{[1
]}

DAS, BN ^{[1
]}

RHYNE, JJ ^{[1
]}

机构：

[1] NBS,WASHINGTON,DC 20234

来源：

JOURNAL OF APPLIED PHYSICS | 1979年 / 50卷 / 03期

关键词：

D O I：

10.1063/1.327128

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the magnetic excitation spectrum of ErCo2 at 4.2 K using neutron inelastic scattering and compared the results to a Green's function RPA theory of magnetic excitations in a ferrimagnet with crystalline electric fields; based on dynamic structure factor considerations we conclude that each of the observed scattering peaks consists of two nearly degenerate excitations, one of which corresponds to out-of-phase precession of the two rare earths in the primitive cell, while the other corresponds to in-phase precession. By comparing these results with a Green's function RPA theory we are able to determine the Er3+ crystal field parameters as well as the Er-Co mean exchange field. (AIP). © 1979, American Institute of Physics. All rights reserved.

引用

页码：1969 / 1969

页数：1