BEHAVIOR OF DISORDERED CO-PD, CO-AG, AND CO-MO ALLOYS IN MULTILAYER INTERFACES

Local environment effects are important for understanding interfacial magnetism in artificially structured multilayers. For this reason, sta ble and/or metastable disordered alloys CoXM1-X (M = Pd, Ag, Mo) were fabricated in a dc cosputtering system. The magnetization as a functio n of composition and temperature were measured and analyzed in terms o f a mean-field model. The local environment effect on the Co moment fr om its Ag (or Mo) neighbors and the Pd moment from its Co neighbors ar e studied. It is found that the polarized Pd moment increases linearly with an increasing number of nearest Co neighbors and the Co moment i s destroyed by only two Mo neighbors.