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Heat-assisted magnetic recording media materials

  • K. Hono (a1), Y.K. Takahashi (a2), Ganping Ju (a3), Jan-Ulrich Thiele (a4), Antony Ajan (a5), XiaoMin Yang (a6), Ricardo Ruiz (a7) and Lei Wan (a8)...

Abstract

Heat-assisted magnetic recording (HAMR) is being developed as the next-generation magnetic recording technology. High anisotropy granular media such as FePt-C have been demonstrated as HAMR media for ∼2 Tbpsi (terabits per in2) recording density. In order for this technology to reach its full potential of 4–5 Tbpsi, more progress and innovations are needed for the key requirements for HAMR media, including microstructure, design, magnetic distribution, and thermal design. Beyond granular media, heated-dot magnetic recording (HDMR) is planned to extend areal density toward 10 Tbpsi. HDMR combines similar advanced recording layer materials with advanced patterning techniques to fabricate <10-nm rectangular dot media.

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