磁気X線顕微鏡による光磁気記録磁区の高分解能観察

概要

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Thermomagnetically recorded magnetic domains were observed with a magnetic transmission X-ray microscope (M-TXM) in order to clarify the recording characteristics of magneto-optical (MO) disks. The domains were recorded on TbFeCo films using a conventional red optical system by means of laser pumped magnetic field modulation (LP-MFM) and light intensity modulation (LIM). Typical images of recorded magnetic domains were taken at the Fe L_3-edge. From the results, it was confirmed that thermal control was very important in the formation of small magnetic domains. It was also shown that a sample with compensation composition was most suitable for forming small domains of less than 100 nm. The M-TXM allows us to image small domains with high resolution and seems to be useful for optimizing the magnetic properties of the recording layer as well as for designing the thermal control of MO disks to achieve high-density recording.
社団法人日本磁気学会の論文
2001-07-01