Abstract: Magnetic excitations in ErCo2

1 March 1979

journal article
dissertation
Published by AIP Publishing in Journal of Applied Physics

Vol. 50 (B3) , 1969
https://doi.org/10.1063/1.327128

Abstract

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)

This publication has 2 references indexed in Scilit:

Magnetic Moment Distribution of Nickel Metal
Physical Review B, 1966
Orbital Contribution to the Magnetic Form Factor of ${Ni}^{+ +}$
Physical Review B, 1961