Micromagnetic model analysis of high frequency heat-assisted magnetic recording

Yasushi Kanai, Simon J. Greaves, Kazuetsu Yoshida, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

FEM-boundary integral method micromagnetic software was used to analyze the recording field response of an indented magnetic head to high frequency recording currents (1-4 GHz). Next, micromagnetic simulations of heat-assisted magnetic recording were performed and the signal-to-noise ratio (SNR) calculated at high frequencies. With a soft magnetic underlayer, the head field was large enough and gave higher SNRs. The large head field strength at low frequency did not cause any deterioration of the SNR.

Original languageEnglish
Article number17C506
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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