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Heat-assisted magnetic recording media materials

  • Materials for Heat-Assisted Magnetic Recording
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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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Authors and Affiliations

  1. Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Japan

    K. Hono

  2. Magnetic Recording Materials Group, National Institute for Materials Science, Japan

    Y. K. Takahashi

  3. Recording Media Research Center, Seagate Technology, USA

    Ganping Ju

  4. Seagate Technology, USA

    Jan-Ulrich Thiele & XiaoMin Yang

  5. Magnetic Recording Media Division, Western Digital Corporation, USA

    Antony Ajan

  6. Western Digital Corporation, USA

    Ricardo Ruiz & Lei Wan

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  1. K. Hono
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Correspondence to K. Hono.

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Hono, K., Takahashi, Y.K., Ju, G. et al. Heat-assisted magnetic recording media materials. MRS Bulletin 43, 93–99 (2018). https://doi.org/10.1557/mrs.2018.5

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