Temperature Performance of Dual-Layer Hamr Media
2023 IEEE 34th Magnetic Recording Conference (TMRC)(2023)
摘要
Heat assisted magnetic recording (HAMR) has been shown to provide substantial growth in hard disk areal densities compared to the conventional perpendicular recording [1 , 2] . The continued growth of areal density capability (ADC) of HAMR media relies on the grain-size reduction of its media grains. As we continue to reduce the grain-size, however, the maximum ADC is expected to close around ~3 Tbpsi, limited by the lowered magnetic stability of grains [1] . Dual layer media, with an exchange break layer separating two layers of distinct Tc was proposed [3] as a design paradigm that would allow continued areal density improvements.
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