Temperature and layer-thickness dependencies of Kerr rotation in Dy/Co multilayers

Authors

Z.S. Shan, University of Nebraska - Lincoln
J.X. Shen, University of Nebraska - Lincoln
Roger D. Kirby, University of Nebraska-LincolnFollow
Sy_Hwang Liou, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

November 1991

Comments

Published by American Institute of Physics. J. Appl. Phys., 70, 6203(1991). ©1991 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

Amorphous Dy/Co multilayers with the individual layer thickness between 4 and 10 Å in steps of 0.5 to 1 Å were studied systematically over the temperature range 100–300 K. The Kerr rotation increases as temperature decreases, or as Co content increases and the coercivity increases both in the low temperature region and in the vicinity of the compensation point. These characteristics were analyzed in terms of simple models of the magnetic structure and magnetization reversal.