FeNi and Ti underlayers for vertical recording on rigid disks

Abstract
FeNi and Ti underlayers on CoCr disks are studied. It is confirmed that the structure of FeNi thin films is derived from pure Ni cfc structure. Soft magnetic films can be achieved when sputtering conditions are optimized for an Fe2ONi80 target. Sputtering conditions were also studied for Ti layers. It was found that Ti thin films crystallize in the hcp structure. An