| 摘要 |
PURPOSE:To eliminate the need for a means for impressing an external magnetic field to the titled medium by forming a high magnetic permeability magnetic material layer and insulator layer on a substrate, forming zigzag patterns consisting of dielectrics thereon and further, forming a recording layer consisting of an amorphous magnetic alloy film and protective layer consisting of dielectrics thereon. CONSTITUTION:The high magnetic permeability magnetic material layer 2 is formed on the substrate 1 and the zigzag patterns 4 which consist of the conductors and have specified intervals are formed via an insulating layer 3 on said layer. The recording layer 5 which consists of the amorphous magnetic alloy film having magnetic anisotropy in the direction perpendicular to the film plane and the protective layer 6 consisting of the dielectrics are formed in this order thereon. A bias magnetic field is impressed perpendicularly to the recording layer 5 part formed between the patterns 4 when electric current is passed to the zigzag patterns 4. The high magnetic permeability magnetic material layer 2 acts to efficiently guide the bias magnetic field to the recording layer 5 part. The impressing direction of this bias magnetic field can be easily changed over by changing over the current direction. Desired recording is thereby executed while a specified laser power is projected to the medium.
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