Thin-film magnetic head with three-layer pole top structure
AssigneeTDK Corporation
InventorTetsuya Mino
Life of this patent
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Abstract
A thin-film magnetic head includes an ABS and a three-layer pole tip structure located between the ABS and a position at a predetermined height from the ABS. The structure consists of a first pole, a recording gap layer and a second pole. The recording gap layer is made of a material having a etching rate equal to or higher than that of a material for making the first and second poles.
Claims6
A thin-film magnetic head including an air bearing surface and a three-layer pole tip structure located between the air bearing surface and a position at a predetermined height from the air bearing surface, said structure consisting of a first pole, a recording gap layer and a second pole, said recording gap layer being made of a material having a etching rate equal to or higher than that of a material for making said first and second poles, the material for making said recording gap layer comprising Ta2O5, and the material for making said first and second poles comprising NiFe.
A thin-film magnetic head comprising:
- a magnetoresistive reproducing head part;
- an inductive recording head part multilayered with said reproducing head part;
- and
- an air bearing surface,
- said recording head part including a three-layer pole tip structure located between the air bearing surface and a position at a predetermined height from the air bearing surface, said structure consisting of a first pole, a recording gap layer and a second pole,
- said recording gap layer being made of a material having an etching rate equal to or higher than that of a material for making said first and second poles, the material for making said recording gap layer comprising Ta2O5, and the material for making said first and second poles comprising NiFe.
A thin-film magnetic head including an air bearing surface and a three-layer pole tip structure located between the air bearing surface and a position at a predetermined height from the air bearing surface, said structure consisting of a first pole, a recording gap layer and a second pole, said recording gap layer being made of a material having an etching rate equal to or higher than that of a material for making said first and second poles, the material for making said first and second poles comprising a nitride containing Fe, and the material for making said recording gap layer comprising one selected from a group of Ta2O5, SiC, and AlN.
A thin-film magnetic head comprising:
- a magnetoresistive reproducing head part;
- an inductive recording head part multilayered with said reproducing head part;
- and
- an air bearing surface,
- said recording head part including a three-layer pole tip structure located between the air bearing surface and a position at a predetermined height from the air bearing surface, said structure consisting of a first pole, a recording gap layer and a second pole,
- said recording gap layer being made of a material having an etching rate equal to or higher than that of a material for making said first and second poles, the material for making said first and second poles comprising a nitride containing Fe, and the material for making said recording gap layer comprising one selected from a group of Ta2O5, SiC, and AlN.
Dependencies are inferred from the claim text.