Modelling of heat assisted magnetic recording with the Landau-Lifshitz-Bloch equation and Brillouin functions

Simon John Greaves, Hiroaki Muraoka, Yasushi Kanai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Brillouin functions were used to model the temperature dependence of magnetisation in media for heat assisted magnetic recording. Although dHk/dT was higher when Brillouin functions with J=0.5 or J=1 were used, an earlier onset of the linear reversal mode led to a drop in dHc/dT near to Tc, resulting in wider written bits. Tracks written with a higher thermal gradient were also wider when J was small and had lower SNR.

Original languageEnglish
Article number17C505
JournalJournal of Applied Physics
Volume117
Issue number17
DOIs
Publication statusPublished - 2015 May 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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