Microstructure control of L10-ordered FePt granular film for heat-assisted magnetic recording (HAMR) media

B. S.D.Ch S. Varaprasad, Y. K. Takahashi, K. Hono

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

L10-ordered FePt nanogranular film is one of the promising candidates for the next-generation high areal density media for heat-assisted magnetic recording (HAMR). To realize a suitable microstructure for the HAMR media, the granular structure composed of uniformly dispersed L1 0-FePt nanoparticles with various segregants has been optimized using various combinations of segregants and seed layer materials. Although the microstructure of FePt-C came so close to the ideal one for HAMR, it would not be the final answer as the growth of the columnar grain structure is not possible due to too strong phase separation between FePt and C. In this article, we review recent investigations aiming at achieving the ideal microstructure for HAMR media.

Original languageEnglish
Pages (from-to)853-861
Number of pages9
JournalJOM
Volume65
Issue number7
DOIs
Publication statusPublished - 2013 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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