Title :
HAMR Medium Structure Design and Its Process for Excellent Thermal Performance
Author :
Jiang Feng Hu ; Jian Zhong Shi ; Tie Jun Zhou ; Cher, Kelvin M. ; Bao Xi Xu ; Rong Ji ; Bo Liu
Author_Institution :
Data Storage Inst., Agency for Sci., Technol. & Res., Singapore, Singapore
Abstract :
The L10 ordered FePt-based medium with a novel thermal design for heat-assisted magnetic recording (HAMR) application has been demonstrated. The proposed seed-then-heat sink approach using the (001) textured Cu3N as the underlayer to induce the MgO (200) texture at room temperature. The high temperature process for FePtX granular film deposition resulted in the decomposition of the Cu3N to Cu and made it a suitable heat sink layer. Our approach eliminated the effect of the boundary thermal resistance and enabled a large thermal gradient during the writing process, which is critical to the FePt-based medium for HAMR application.
Keywords :
decomposition; granular materials; heat sinks; iron alloys; magnetic thin film devices; platinum alloys; thermomagnetic recording; FePt; HAMR medium structure design; L10 ordered FePt-based medium; boundary thermal resistance; decomposition; granular film deposition; heat-assisted magnetic recording; high temperature process; seed-then-heat sink approach; temperature 293 K to 298 K; thermal gradient; thermal performance; writing process; Copper; Heat sinks; Heat-assisted magnetic recording; Heating; Temperature measurement; Writing; $L1_{0}$ ordered FePt; Heat-assisted magnetic recording (HAMR); heat sink layer; thermal design;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2286615
