We evaluate laser-pumped magnetic-field-modulation (LP-MFM), continuous laser-irradiated magnetic-field-modulation, andlight-intensity-modulation recording in magneto-optical disks, usingtemperature calculations and experiments. LP-MFM is useful forrecording short marks: One can record magnetic domains as small as 0.15-μm marks with LP-MFM by using a spin-polarized scanningelectron microscope. LP-MFM is also useful for reducing the trackpitch. Experiments showed that no cross write occurred at a 0.6-μm track pitch, and calculation showed that the heatdistribution is narrow. We confirmed the advantages of LP-MFM forrecording magnetically induced superresolution disks by investigatingthe difference in the shapes of the recorded domains.
© 1998 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(180.5810) Microscopy : Scanning microscopy
(210.3810) Optical data storage : Magneto-optic systems
(230.3810) Optical devices : Magneto-optic systems
Yasuhito Tanaka, Masaaki Kurebayashi, Teruo Kohashi, Yoshiteru Murakami, and Seiji Yonezawa, "Short-Marks Recording Characteristics of Laser-Pumped Magnetic-Field-Modulation Recording in a Narrow Track Pitch and on Magnetically Induced Superresolution Disks," Appl. Opt. 37, 2699-2707 (1998)