Enhancement of tunnel magnetoresistance with oxidized AlHf-alloy for a tunnel barrier

Extreme Nano-structure Control by Sputtering for the High Density Perpendicular Recording Media and Head

“…However, in order to further achieve higher recording density (> 1 Tbpsi), the J K should be enhanced more and thus new technology is required. We have recently found [4] that the ferromagnetic (FM) layer with double-layered Co-Fe films having ultra-thin (0.5-nm-thick) Co-rich layer can enhance the J K as shown in the below figure. This is due to the formation of Co-rich bcc phase in the FM layer at the interface.…”