Giant magnetoresistance of Co/Cu, NiFeCo/Cu, and NiFe/Cu multilayers sputter-deposited on Cu/Si(111) substrates

Abstract

Magnetoresistance values of 33%, 19%, and 12% were observed at the second magnetoresistance maximum peaks for Co/Cu, NiFeCo/Cu and NiFe/Cu multilayers, respectively. Magnetoresistance was rather insensitive to the thickness of Cu spacer layer. In-plane uniaxial magnetic anisotropy was found in these multilayers. (110) pseudo-epitaxial growth of these multilayers rendered one of the Si[110] an easy axis in the plane.