Investigation on the Effect of an In-Plane Auxiliary Field on the SNR of HAMR Recording Systems

Investigation on the Effect of an In-Plane Auxiliary Field on the SNR of HAMR Recording Systems

In this paper, we consider the application of an in-plane auxiliary field into the exchange-coupled composite medium in the heat-assisted magnetic recording (HAMR) system. The dynamic micromagnetic simulations are conducted based on the Landau-Lifshitz-Bloch equations and the signal-to-noise ratio (...

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Veröffentlicht in:IEEE transactions on magnetics 2014-11, Vol.50 (11), p.1-4
Hauptverfasser: Hongtao Wang, Chan Kheong Sann, Zhimin Yuan, Pantelis, Sophoclis Alexopoulos
Format: Artikel
Sprache:eng
Schlagworte:
Equations
Heat-assisted magnetic recording
Magnetism
Magnetization
Mathematical model
Media
Micromagnetics
Signal to noise ratio
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Beschreibung
Zusammenfassung:In this paper, we consider the application of an in-plane auxiliary field into the exchange-coupled composite medium in the heat-assisted magnetic recording (HAMR) system. The dynamic micromagnetic simulations are conducted based on the Landau-Lifshitz-Bloch equations and the signal-to-noise ratio (SNR) characterizations are performed. The effect on the SNR of the HAMR system is investigated. The improvement on the SNR with the auxiliary field in negative downtrack direction is identified.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2014.2324615