A comparative study of perpendicular media

Simon Greaves, Yasushi Kanai, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Three types of perpendicular recording media were compared using simulations. Exchange coupled composite (ECC) type media could support minimum track pitches up to 18 nm less than a single layer medium, allowing significantly higher areal recording densities. The recording performance of all media was highly susceptible to grain-to-grain variations of uniaxial anisotropy Ku and, in the case of ECC media, to variations in the interlayer coupling strength. Areal densities of around 500 Gb/in2 should be achievable using current technologies, higher densities require improved manufacturing tolerances.

Original languageEnglish
Pages (from-to)2118-2120
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number6
Publication statusPublished - 2007 Jun


  • Composite media
  • Micromagnetic simulation
  • Perpendicular magnetic recording


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