Magnetic head and magnetic recording system
AssigneeHitachi, Ltd.
InventorTomio IWASAKI
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Abstract
A magnetic reproduction head includes a lower magnetic shield layer, an upper magnetic shield layer, a magnetoresistive film formed between the lower and the upper magnetic shield layers, a refill film in an element height direction disposed in contact with a surface opposite a floating surface of the magnetoresistive film, and a refill film in a track width direction disposed on a side wall surface of the magnetoresistive film. The magnetoresistive film is a tunneling magnetoresistive film including a free layer, an insulating barrier layer, and a fixed layer. The insulating barrier layer is one of a magnesium oxide film, an aluminum oxide film, and a titanium oxide film which contains at least one of nitrogen and silicon.
Claims10
A magnetic reproduction head comprising:
- a lower magnetic shield layer;
- an upper magnetic shield layer:
- a magnetoresistive film formed between the lower magnetic shield layer and the upper magnetic shield layer;
- a first refill film in an element height direction disposed in contact with a wall surface opposite a floating surface of the magnetoresistive film;
- and
- a second refill film disposed in contact with both wall surfaces of the magnetoresistive film in a track width direction,
- wherein the magnetoresistive film is a tunneling magnetoresistive film including a free layer, a fixed layer, and an insulating barrier layer formed between the free layer and the fixed layer;
- and
- the insulating barrier layer includes an oxide film as one of a magnesium oxide film, an aluminum oxide film, and a titanium oxide film which contains at least one of nitrogen and silicon.
Dependencies are inferred from the claim text.