Renormalized anisotropic exchange for representing heat assisted magnetic recording media

Yipeng Jiao, Zengyuan Liu, R. H. Victora

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Anisotropic exchange has been incorporated in a description of magnetic recording media near the Curie temperature, as would be found during heat assisted magnetic recording. The new parameters were found using a cost function that minimized the difference between atomistic properties and those of renormalized spin blocks. Interestingly, the anisotropic exchange description at 1.5 nm discretization yields very similar switching and magnetization behavior to that found at 1.2 nm (and below) discretization for the previous isotropic exchange. This suggests that the increased accuracy of anisotropic exchange may also reduce the computational cost during simulation.

Original languageEnglish (US)
Article number17E317
JournalJournal of Applied Physics
Volume117
Issue number17
DOIs
StatePublished - May 7 2015

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