| 摘要 |
PURPOSE:To enhance the efficiency of a core and to prevent the degradation in magnetic characteristics by adopting the constitution in which a track width is defined by butting of magnetic metallic films to prevent exposing of glass parts to a surface for sliding with a head. CONSTITUTION:A nonmagnetic film 4 consisting of SiO2, etc., or the same material as the material of a nonmagnetic material 3 consisting of ceramics is formed on the nonmagnetic material 3. The magnetic metallic film 6 consisting of amorphous CoNb or 'SENDUST(R)' material or the like is then formed in the form of multi-layered structure with the nonmagnetic film on said film. Two sheets of the nonmagnetic materials 3 exposed with the films 4 by flattening the surface are thereafter disposed to face each other via a magnetic metallic film 8 consisting of an amorphous CoNb or 'SENDUST(R)' material, etc., to constitute a main magnetic circuit and are adhered to each other. Such bodies are then cut and are butted to each other via a spacer to form the head gap. The efficiency of the core in a high-frequency region is thereby improved, by which the high wear resistance is obtd. and the degradation in the magnetic characteristics is obviated.
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