Enhanced temperature effect on magnetoresistance in Fe/Mo multilayers

Authors

M.L. Yan, State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing, China
Y.W. Lai, State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing, China
L. Yin, State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing, China
Sy_Hwang Liou, University of Nebraska-LincolnFollow

Date of this Version

April 1997

Comments

Published by American Institute of Physics. J. Appl. Phys., 81, 4782(1997). © 1997 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

We have observed an enhancement of the temperature effect on magnetoresistance (MR) in Fe/Mo multilayers with the increase of the Mo layer thickness. MR at the first antiferromagnetic maximum is large and insensitive to the temperature whereas at the third antiferromagnetic maximum it is small and relatively sensitive to the temperature. We found that the mean free path of the conduction electrons increased with the increase of the Mo layer thickness at a fixed temperature and it decreased very slightly with the increase of the temperature at a fixed Mo layer thickness. The interlayer coupling, similar to MR, also has an enhanced temperature effect with the increase of the Mo layer thickness. There is a scaling relationship between the temperature effect on saturation field H_s and MR, which suggests that the decrease of the interlayer coupling strength is responsible for the enhanced temperature effect on MR.