Microstructure and magnetic properties of FePt-Cr2O3 films

Taisuke Shiroyama, Bollapragada S.D.C.S. Varaprasad, Yukiko K. Takahashi, Kazuhiro Hono

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We have studied the microstructures and magnetic properties of FePt with various metal oxides, to achieve an ideal media structure on glass substrates for thermally assisted magnetic recording. Unlike FePt-C granular films, FePt-MxOy(M = Ti, Nb, W, Zr, and Al) granular films showed an interconnected in-plane microstructure and low coercivity. However, the usage of Cr2O3 as a segregant leads to very fine columnar granular structure, while there is still room for improvement in coercivity.

Original languageEnglish
Article number6971612
JournalIEEE Transactions on Magnetics
Issue number11
Publication statusPublished - 2014 Nov 1


  • FePt
  • granular film
  • heat-assisted magnetic recording (HAMR)


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