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US 6,747,851 B2Granted
Thin-film magnetic head and method of manufacturing same
AssigneeTDK Corporation
InventorsYoshitaka Sasaki, Tohru Inoue
Life of this patent
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Abstract
A thin-film magnetic head comprises a reproducing head and a recording head. The reproducing head comprises: a GMR element; a bottom shield layer and a top shield layer for shielding the GMR element; conductive layers connected to the GMR element; and shield gap films formed between the shield layers. Each of the shield gap films is made up of a plurality of thin alumina films stacked that are formed by performing the step of forming a thin alumina film by low pressure CVD, for example, a plurality of times.
Claims4
A thin-film magnetic head comprising:
- a medium facing surface that faces toward a recording medium;
- a first magnetic layer including a pole portion and a second magnetic layer including a pole portion, the first and second magnetic layers being magnetically coupled to each other, the pole portions being opposed to each other and placed in regions of the magnetic layers on a side of the medium facing surface, each of the magnetic layers including at least one layer;
- a gap layer provided between the pole portions of the first and second magnetic layers;
- and
- a thin-film coil at least a part of which is placed between the first and second magnetic layers, the at least part of the coil being insulated from the first and second magnetic layers;
- wherein
- the gap layer is made of a plurality of insulating films stacked that are formed by chemical vapor deposition;
- and
- each of the insulating films has a thickness of 0.1 to 0.2 nm.
6 more elements
Dependencies are inferred from the claim text.