抄録
Bilayered Fe65Co35 (=FeCo)/Co films were prepared by facing targets sputtering with 4πMs∼24 kG. Soft magnetic properties were induced in the FeCo films by the presence of a Co underlayer. Hc decreased rapidly when the Co underlayer was 2 nm or more. The films showed well-defined in-plane uniaxial anisotropy, with typical values of Hce = 10 Oe and Hch = 3 Oe, respectively. The high-frequency characteristics of the films show that they can work at 0.8 GHz with real permeability as high as 250. Reduced roughness was achieved by a inserting Co layer between the glass substrate and the FeCo layer.
