R&D: HAMR on Dual Structure Bit Patterned Media

Areal density capability of dual structure media was calculated and found to be in excess of 7Tb/in², even when taking account of dot position distributions and magnetostatic fields from surrounding dots.

This is a Press Release edited by StorageNewsletter.com on October 22, 2020 at 2:09 pm

IEEE Transactions on Magnetics has published an article written by Hikaru Yamane, Simon John Greaves, and Yoichiro Tanaka, RIEC, Tohoku University, Sendai, 980-8577, Japan.

Abstract: “Heat assisted magnetic recording on bit patterned media dots with two magnetic structures is modelled. If the magnetic structures have different Curie temperatures two bits of information can be stored in each dot by writing at high and low temperatures. The areal density capability of the dual structure media was calculated and found to be in excess of 7Tbit/in², even when taking account of dot position distributions and magnetostatic fields from surrounding dots.“