The Effect of Impurity Doping of The Magnetic Layer on the Magnetoresistance and Saturation Field of FeCr/Cr and CoCu/Cu

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ABSTRACT The effect of doping the magnetic layer on the magnetoresistance and saturation field of epitaxial, sputter-deposited FeCr/Cr(001) and CoCu/Cu(001) multilayers was examined. FeCr/Cr films with a composition of [14 A FelixCr.(001)/8 A Cr(001)] 5o where x was varied from 0 to 0.5 and CoCu/Cu films with a composition of [8 A Co1_xCu.(001)/21 A Cu(001)] 40 where x was varied from 0 to 0.2 were deposited onto single crystal MgO(001). The bilayer period and epitaxial orientation of these films were determined by x-ray diffraction. In the FeCr/Cr system the room temperature magnetoresistance was constant at approximately 31% for x

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