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AssigneeAlps Electric Co., Ltd.
InventorKiyoshi Kobayashi
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A thin film magnetic head suitable for an increase in a packing density and an increase in frequency of a magnetic recorder is provided, while the reliability is maintained, and protrusion of a recording head portion from a surface facing a magnetic disk due to thermal expansion is reduced. In the region between a joint and a recording portion, the spacing dimension between the conductive layers of a first coil adjacent to each other is allowed to be equal to the height dimension of the conductive layer of the first coil, and the space of the first coil is filled in with an inorganic material portion of an insulating layer. Regarding the perimeter and the inside of the first coil, the portion which cannot be filled in with the inorganic material portion of the insulating layer leaving no space is filled in with an organic material portion, so that insulation is provided with reliability, and thermal expansion of the insulating film due to the heat release from the first coil is reduced by an inorganic material unlikely to thermally expand.
A thin film magnetic head comprising a lower core layer, an upper core layer located above the lower core layer, a joint for magnetically connecting the lower core layer and the upper core layer, a coil formed from a conductive layer wound around the joint in a plurality of rows, and a recording portion located between the lower core layer and the upper core layer to constitute a magnetic gap,
Dependencies are inferred from the claim text.