Substrate for thin-film magnetic head and method of manufacturing the substrate
AssigneeHitachi Metals, Ltd.
InventorTaisuke Hirooka
Life of this patent
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Abstract
A thin-film magnetic head substrate according to the present invention includes: a ceramic base with a principal surface; and an undercoat film, which covers the principal surface of the ceramic base. An electrical/magnetic transducer is provided on the undercoat film. The substrate further includes an intermediate layer between the principal surface of the ceramic base and the undercoat film. The intermediate layer is made of a material other than an aluminum oxide and has been patterned so as to make a portion of the principal surface of the ceramic base contact with the undercoat film.
Claims23
1-22. (canceled)
A thin-film magnetic head substrate comprising:
- a ceramic base with a principal surface;
- and
- an undercoat film, which is made of an aluminum oxide and which covers the principal surface of the ceramic base, an electrical/magnetic transducer being provided on the undercoat film,
- wherein the substrate further includes an intermediate layer between the principal surface of the ceramic base and the undercoat film, and
- wherein the intermediate layer is made of a material other than the aluminum oxide and has been patterned so as to make a portion of the principal surface of the ceramic base contact with the undercoat film.
A method of manufacturing a thin-film magnetic head substrate that includes a ceramic base with a principal surface and an undercoat film covering the principal surface of the ceramic base, an electrical/magnetic transducer being provided on the undercoat film, the method comprising the steps of
- forming a patterned intermediate layer, made of a non-aluminum-oxide material, on the ceramic base, and
- forming an undercoat film, made of an aluminum oxide, on the ceramic base such that the undercoat film covers the patterned intermediate layer.
Dependencies are inferred from the claim text.