Matsushita Electric Industrial Co., Ltd.

Hiroshi Okayama

Seishi Tomari

Seiko Uemura

Kazuhiro Ishibashi

A slider being made of ferrite and a core formed with a magnetic metal film on its gap confronting surface are connected together by means of bonding glass so as to sandwich a non-magnetic film therebetween as a magnetic gap. The magnetic metal film is made of a magnetic metal material such as Fe-Ni, Fe-Al-Si and the like, and is constructed through the thin-film fabrication technology such as sputtering. A recessed portion is provided on the magnetic metal film in such a manner that the recessed portion is retracted from a medium confronting surface of the magnetic head by a depth t. Thus, no color change is caused on the magnetic metal material and, therefore, no deterioration in various characteristics of the magnetic head is expected.

Magnetic head including a recessed magnetic metal film

A slider being made of ferrite and a core formed with a magnetic metal film on its gap confronting surface are connected together by means of bonding glass so as to sandwich a non-magnetic film therebetween as a magnetic gap. The magnetic metal film is made of a magnetic metal material such as Fe--Ni, Fe--Al--Si and the like, and is constructed through the thin-film fabrication technology such as sputtering. A recessed portion is provided on the magnetic metal film in such a manner that the recessed portion is retracted from a medium confronting surface of the magnetic head by a depth t. Thus, no color change is caused on the magnetic metal material and, therefore, no deterioration in various characteristics of the magnetic head is expected.

Magnetic head apparatus having multiple recessed magnetic metal films

A magnetic head comprising first and second core halves made of an oxide magnetic material and arranged to be abutted against each other to have a winding channel and to define at least one magnetic gap therebetween and joined by a bonding glass. On each of the surfaces of the first and second core halves which respectively face said magnetic gap, there is provided a metallic magnetic film made of a metallic magnetic material including nitrogen. Further, a protective film is provided on each of the metallic magnetic films. The protective film is made of a nitride material such as CrN, VN, Si3N4, BN, TaN, AlN, TiN and ZrN. The protective films prevent the nitrogen of the metallic magnetic films from discharging into the bonding glass.

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Kumamoto, Japan

Hiroshi Okayama