15:45 〜 16:15
▲ [10p-M101-5] Device Oscillation and Media AC-field Response of MAMR
キーワード：MAMR, Magnetic Recording, Microwave Assisted Magnetic Recording
Hard Disk Drives have seen more than eight orders of areal density increase over six decades. This has required numerous advances in head and media materials and structures. These advances have pushed magnetic recording to ~1Tbit/in2.
However, in order to write even higher coercivity media, more field is required than the inductive head can provide. Therefore Energy Assisted Magnetic Recording – HAMR (Heat Assisted Magnetic Recording) or MAMR (Microwave Assisted Magnetic Recording) [1] are now being developed and deployed. This Talk will focus on MAMR technology.
The MAMR head has a Spin Torque Oscillator (STO) within the write gap. The microwave field from the STO reduces the switching field of the medium. This enables use of higher anisotropy and higher coercivity media, and thus improves areal density. In this study, we fabricated MAMR heads and confirmed ~20 GHz oscillation peaks. We also confirmed MAMR unique recording characteristics with the fabricated MAMR head and media.
However, in order to write even higher coercivity media, more field is required than the inductive head can provide. Therefore Energy Assisted Magnetic Recording – HAMR (Heat Assisted Magnetic Recording) or MAMR (Microwave Assisted Magnetic Recording) [1] are now being developed and deployed. This Talk will focus on MAMR technology.
The MAMR head has a Spin Torque Oscillator (STO) within the write gap. The microwave field from the STO reduces the switching field of the medium. This enables use of higher anisotropy and higher coercivity media, and thus improves areal density. In this study, we fabricated MAMR heads and confirmed ~20 GHz oscillation peaks. We also confirmed MAMR unique recording characteristics with the fabricated MAMR head and media.