| 摘要 |
PURPOSE:To control the deterioration in the characteristics of the titled magnetic head and to improve the production yield by successively providing a protective layer of a nonmagnetic oxide or carbide and a protective film of a nonmagnetic metallic film at the track width reducing groove part of the magnetic head using a metallic magnetic material, and further filing glass on the non-magnetic metallic film. CONSTITUTION:A groove 37 for coils is provided to one core half 30 of core halves 30 and 30' constituting the magnetic head core. The core halves 30 and 30' each consisting of a protective core material 31 and a metallic magnetic film 32, and protective films 33 and 34 are formed between glass 35 and the metallic magnetic film 32. The protective film 33 of a nonmagnetic oxide or carbide is firstly formed, and then the protective film 34 of a nonmagnetic metal is formed. The two core halves 30 and 30; are integrally bonded with the glass 35 through a nonmagnetic magnetic gap film. Besides, the metallic magnetic material is selected from an amorphous magnetic alloy, an Fe-Al-Si alloy, and an Ni-Fe alloy, the material of the protective film is selected from a group of SiO2, Al2O3, etc., or a group of TiC, SiC, etc., and the material of the nonmagnetic metallic film is selected from a group of Cr, Ti, Mo, Al, etc.
|
