Magnetic and Magnetotransport Properties of CoxFe1-x/Cu Multilayers

Abstract
We have investigated the magnetic and magnetotransport properties of (Co x Fe1-x /Cu) multilayers prepared by ion beam sputtering. We found that (Co x Fe1-x /Cu) multilayers are new ones with large magnetoresistance in the range between x=0.6 and 1.0. We also found that the 27.2% magnetoresistance ratio could be observed for the magnetic field under the 0.9 kOe when (FeCo910 Å/Cu10 Å)15 was deposited on the MgO(110) single-crystal substrates. In this system, saturation field H s decreases substantially when crystal anisotropy is utilized.