Simulation of high-density thermomagnetic recording process with magnetic field modulation method

T. Koyama; Takashi Kato; S. Tsunashima

doi:10.1117/12.510246

9 April 2003 Simulation of high-density thermomagnetic recording process with magnetic field modulation method

T. Koyama, Takashi Kato, S. Tsunashima

Proceedings Volume 5060, Sixth International Symposium on Optical Storage (ISOS 2002); (2003) https://doi.org/10.1117/12.510246
Event: Sixth International Symposium on Optical Storage (ISOS 2002), 2002, Wuhan, China

Abstract

Thermomagnetic recording process was simulated for Tb_x((Fe₇₈Co₂₂)_100-x media by using Huth's model modified to apply the magnetic field modulation (MFM) recording method. In the case of X = 17.6 (TM-rich) medium recorded with 1 μm laser spot and single pulse field, the recorded mark length becomes much longer than designed one when it becomes shorter than 100 nm. In the case of X = 21.7 (RE-rich) medium, the recorded mark lengths is not so much longer compared to those of X = 17.6 and 19.4, but it becomes difficult to record marks shorter than 40 nm due to the collapse of domains. The influence of magnetic parameters on the recording characteristics is also discussed.

Citation Download Citation

T. Koyama, Takashi Kato, and S. Tsunashima "Simulation of high-density thermomagnetic recording process with magnetic field modulation method", Proc. SPIE 5060, Sixth International Symposium on Optical Storage (ISOS 2002), (9 April 2003); https://doi.org/10.1117/12.510246

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