APPLICATION OF PD CO MULTILAYERS FOR PERPENDICULAR MAGNETIC RECORDING/

We demonstrate that Pd/Co multilayers can have superior properties for perpendicular magnetic recording media using a contact probe head. Th e multilayers are capable of generating relatively large signal amplit udes compared to conventional perpendicular CoCrTa alloy media, with a more than twofold increase in signal amplitude at 145 kilo flux chang es per inch. We have also investigated the effect of Cr alloying of th e Co layer to reduce the demagnetization energy of the magnetic layer. Cr reduced both the demagnetizing energy of the magnetic layer and th e surface anisotropy of the Pd/CoCr interface.