Heat-assisted magnetic recording media materials

K. Hono, Y. K. Takahashi, Ganping Ju, Jan Ulrich Thiele, Antony Ajan, Xiao Min Yang, Ricardo Ruiz, Lei Wan

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalMRS Bulletin
Issue number2
Publication statusPublished - 2018 Feb 1
Externally publishedYes


  • FePt
  • magnetic properties
  • microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


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