Micromagnetic simulation for antiferro-magnetically coupled recording media

C. H. Hee, J. P. Wang, T. C. Chong

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Hysteresis properties of the antiferromagnetic coupled recording film media is studied via micromagnetic simulation. The theoretical model is discussed in detail in this paper. The effect of the antiferromagnetic coupling constant J on the hysteresis loop and recording performance is reported here. Kink is observed in the hysteresis loop due to the reversal of lower layer magnetization. The kink occurs in the positive field region when |J| > 2K u,2t 2 (under zero temperature environment). The coercivity increased with the increase of the antiferromagnetic coupling constant. Antiferromagnetically coupled media with kink in positive field region shows a smaller transition length and noise. The track edge-noise increased and broadened for AFC media with kink in the negative field region.

Original languageEnglish (US)
Pages (from-to)1515-1517
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 1 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Keywords

  • Antiferromagnetic coupling
  • Micromagnetic simulation
  • Recording media
  • Recording performance

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