| 摘要 |
PURPOSE:To form a magnetic head which is inexpensive and is applicable to high density magnetic recording with an easy working process by forming thin soft magnetic metallic films on nonmagnetic substrates and butting the thin soft magnetic metallic films via a nonmagnetic spacer to each other. CONSTITUTION:An Fe-Al-Si film 2 is formed on a nonmagnetic substrate 1. An insulator 3 is interposed therein as an intermediate layer to form a thin film core having lamination structure. A protective film 4 is then formed thereon and low melting glass 5 is coated thereon. The nonmagnetic substrate 1' is mounted thereon. The entire core parts of both substrates 1, 1' are supported under pressure (P) from the outside in a pressuring jig 6. The boundary faces between the protective film 4 of the Fe-Al-Si film 2 and the low melting glass 5 and between the low melting glass 5 and the substrate 1' are then uniformly joined by the cross-diffusion of the materials by the heat treatment in a gaseous nitrogen atmosphere. Such core is cut and a groove 8 for a coil winding is formed to one thereof. The core member prior to gap butting is obtd.
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