Observation of thermomagnetically recorded domains with high-resolution magnetic soft x-ray microscopy

S. Tsunashima; Nayuki Takagi; Atushi Yamaguchi; Minoru Kume; P. Fischer; M. Kumazawa

doi:10.1117/12.510141

9 April 2003 Observation of thermomagnetically recorded domains with high-resolution magnetic soft x-ray microscopy

S. Tsunashima, Nayuki Takagi, Atushi Yamaguchi, Minoru Kume, P. Fischer, M. Kumazawa

Proceedings Volume 5060, Sixth International Symposium on Optical Storage (ISOS 2002); (2003) https://doi.org/10.1117/12.510141
Event: Sixth International Symposium on Optical Storage (ISOS 2002), 2002, Wuhan, China

Abstract

Magnetic domains were thermomagnetically recorded on TbFeCo films using laser pulsed magnetic field modulation (LP-MFM) and light intensity modulation (LIM). The domains were observed with high resolution magnetic transmission X-ray microscopy (M-TXM) before and after the heat treatment in order to clarify the recording characteristics and the thermal stability of recorded domains. From the results of M-TXM images, it was found that isolated single marks whose lengths are much smaller than 100 nm can be recorded by LP-MFM but their mark lengths become often longer than designed. It was further confirmed that the heat treatment at 120 degree C for 50 hours does not influence significantly the crescent-shaped magnetic domains of 100 nm in width recorded using LP-MFM method and circular domains of 150 nm in diameter recorded using LIM method.

Citation Download Citation

S. Tsunashima, Nayuki Takagi, Atushi Yamaguchi, Minoru Kume, P. Fischer, and M. Kumazawa "Observation of thermomagnetically recorded domains with high-resolution magnetic soft x-ray microscopy", Proc. SPIE 5060, Sixth International Symposium on Optical Storage (ISOS 2002), (9 April 2003); https://doi.org/10.1117/12.510141

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