Thermal agitation of magnetization and recording performance of Co(B)-Pd superlattice perpendicular recording media

Effect of N2 additive gas during sputtering on magnetic properties and microstructure of CoB/Pd multilayered media

“…For instance, the Pd/Si seedlayer, which is deposited under Ar sputtering gas containing N 2 and postannealed, provides well-separated [Co/Pd] n grains to reduce the intergranular exchange coupling [1]. On the other hand, the addition of an appropriate amount of other elements, e.g., B, Ta, Cr, to the Co layers has been attempted to decrease the cluster size [2,3]. Particularly, the additive effect of B was said to be conspicuous and favorable.…”