光アシスト型磁気記録再生技術

概要

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We have developed a new magnetic recording method that combines optical and magnetic recording technologies. The method's laser-assisted write and read functions ensure higher track density, and it allows perpendicular magnetic recording. The new method is based on the unique temperature dependence of the magnetic properties of ferrimagnetic rare-earth transition metal alloys whose magnetic compensation temperatures are around room temperature. In this report, we review the basic characteristics of this new method and present results that clarify it works. Preliminary results for the crosstalk and the frequency response of the read-out signal are also discussed.
社団法人日本磁気学会の論文
1999-08-01