Invention Grant
US07675716B2 Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus 有权
复合薄膜磁头,磁头组件和磁盘驱动装置

Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus
Abstract:
A composite thin-film magnetic head includes a substrate, an under layer formed on the substrate, an MR read head element formed on the under layer and provided with a lower shield layer, an upper shield layer and an MR layer in which a sense current flows in a direction perpendicular to a surface of the MR layer through the upper shield layer and the lower shield layer, an inter-shield insulation layer laminated on the MR read head element, an inductive write head element formed on the inter-shield insulation layer and provided with a first magnetic pole layer, a nonmagnetic layer, a second magnetic pole layer whose end portion is opposed to an end portion of the first magnetic pole layer through the nonmagnetic layer, and a write coil, and an additional shield layer formed between the upper shield layer and the first magnetic pole layer.
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