The GMR effect of Cu/Co multilayer on Si(100)

(Cu/Co)(10) was deposited on SiO2/Si(1 0 0) and Si(1 0 0) respectively, by e-beam evaporation. For the multilayer on Si(1 0 0), the MR was about 9.1% at 10 K and it reduced to 4% at room temperature, while for the sample on SiO2/Si(1 0 0), the MR at 10 and 300 K were 19%, and 7.2%, respectively. The MR extracted from minor R-H loop was higher than that in major R-H loop. This could be due to the increment of domain wall which enhances the electrons scattering. (C) 2000 Elsevier Science B.V. All rights reserved.