Antiferromagnetically Coupled Media for Microwave-Assisted Magnetic Recording

Simon Greaves, Yasushi Kanai, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Antiferromagnetically coupled (AFC) media were modeled as a part of a microwave-assisted magnetic recording system. Recording media grains with magnetically hard and soft layers were AFC by a Ru interlayer. The magnetostatic field arising from such grains has a smaller influence on neighboring grains and recording layers during recording. Compared with single-layer recording media, the SNR of AFC media decreased much more slowly with increasing linear density, and AFC media SNR was superior at high densities. An example of an AFC medium with two recording layers is also presented.

Original languageEnglish
Article number7990191
JournalIEEE Transactions on Magnetics
Issue number2
Publication statusPublished - 2018 Feb


  • Antiferromagnetic coupling
  • microwave-assisted magnetic recording (MAMR)
  • simulation


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