InSn seedlayers for CoPd multilayered media were engineered using dopants (Pd, O) to achieve grain size of 7.8±1.8 nm (σ=23%) and virgin magnetic cluster size of less than 65 nm. HN =-5 kOe and Hc =12.2 kOe make this media promising for extremely high-density recording. These parameters were all realized with room-temperature depositions without annealing. Media with O-doped 2-nm InSn seedlayers without other adhesion layers achieved Hc =6.2 kOe, which will be beneficial in reducing spacing loss. There is evidence that the engineered seedlayers also reduce the anisotropy dispersion and therefore the switching field distributions of these media.
Bibliographical noteFunding Information:
The authors would like to acknowledge the support of the National Science Foundation (ECS-0300209) through the GOALI program. The authors would also like to thank Chris Corwin of Lake Shore Cryotronics, Inc. for his help with the high field VSM measurements.