Micromagnetic calculation for superlattice magnetic recording media

Jianhua Xue, R. H. Victora

Research output: Contribution to journalConference articlepeer-review

17 Scopus citations

Abstract

A micromagnetic model with realistic grain configuration (planar Voronoi cells) is developed to simulate perpendicular magnetic recording media. The model is applied to an experimental Co/Pd superlattice film. The calculated perpendicular hysteresis loop exhibits a coercivity of 6560 Oe, in approximate agreement with the experimental value. It is found that the coercivity is largely invariant to grain irregularity, but the initial switching field depends greatly on grain size uniformity for ideally oriented material. In particular, an assumption of uniform grains produces a knee in the hysteresis loop that is not found with the more realistic Voronoi grains or in experiment.

Original languageEnglish (US)
Pages (from-to)6361-6363
Number of pages3
JournalJournal of Applied Physics
Volume87
Issue number9 III
DOIs
StatePublished - May 1 2000
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: Nov 15 1999Nov 18 1999

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