Microwave-assisted magnetic recording simulation on exchange-coupled composite medium

Terumitsu Tanaka, A. Kato, Y. Furomoto, A. F. Md Nor, Y. Kanai, Kimihide Matsuyama

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The potential of microwave-assisted magnetic recording on exchange-coupled composite (ECC) media is investigated by numerically simulating readwrite processes with respect to the physical and magnetic properties of the soft section of ECC media. To obtain desirable recording performance, the thickness of the soft section must be comparable to the exchange length. Under such condition, the optimal microwave frequency decreases owing to the non-uniformity of the reversal mode. A relatively high anisotropy field in the soft section produces high signal-to-noise ratios. Moreover, large saturation magnetization of the soft section enhances the magnetization reversal of ECC grains but excessive enhancement is likely to induce wide writing, which decreases the high track density.

Original languageEnglish
Article number07B711
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
Publication statusPublished - Apr 1 2012

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magnetic recording
microwaves
composite materials
simulation
magnetization
microwave frequencies
nonuniformity
signal to noise ratios
physical properties
recording
magnetic properties
saturation
anisotropy
augmentation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Microwave-assisted magnetic recording simulation on exchange-coupled composite medium. / Tanaka, Terumitsu; Kato, A.; Furomoto, Y.; Md Nor, A. F.; Kanai, Y.; Matsuyama, Kimihide.

In: Journal of Applied Physics, Vol. 111, No. 7, 07B711, 01.04.2012.

Research output: Contribution to journalArticle

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