MAGNETIC-PROPERTIES AND STRUCTURE OF SPUTTERED CO PD-AG MULTILAYERS/

We have used magnetron sputtering to deposit Co/Pd-Ag multilayers onto unheated (111) Si substrates. The influence of Ag concentration on th eir structure, coercivity, and hysteresis loop squareness was studied. The best rectangular characteristics and highest coercivity were obta ined for the films with 4.0 at. % Ag. These multilayers indicate consi derable improvement in the magnetic properties necessary for magneto-o ptic recording media compared with Co/Pd films. The role of tensile st ress in the system is pointed out and discussed.