CURRENT PERPENDICULAR TO PLANE (CPP) MAGNETIC READ HEAD
First Claim
1. A magnetic read head including a magnetoresistive sensor where sense current flows in a stacking direction of the magnetoresistive sensor, the magnetoresistive sensor comprising:
- a free layer having a magnetization direction that is affected by external magnetic fields and including a Heusler alloy layer and a Co-based amorphous metal layer;
a fixed layer which is stacked with the free layer and has a fixed magnetization direction; and
a non-magnetic intermediate layer between the free layer and the fixed layer.
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Abstract
One general embodiment of the present invention is a magnetic read head including a magnetoresistive sensor where sense current flows in a stacking direction of the magnetoresistive sensor, i.e., perpendicular to the plane of the layers of the head. The magnetoresistive sensor comprises a free layer having a magnetization direction that is affected by external magnetic fields and includes a Heusler alloy layer and a Co-based amorphous metal layer, a fixed layer which is stacked with the free layer and has a fixed magnetization direction, and a non-magnetic intermediate layer between the free layer and the fixed layer.
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Citations
21 Claims
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1. A magnetic read head including a magnetoresistive sensor where sense current flows in a stacking direction of the magnetoresistive sensor, the magnetoresistive sensor comprising:
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a free layer having a magnetization direction that is affected by external magnetic fields and including a Heusler alloy layer and a Co-based amorphous metal layer; a fixed layer which is stacked with the free layer and has a fixed magnetization direction; and a non-magnetic intermediate layer between the free layer and the fixed layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A magnetic read head including a magnetoresistive sensor where sense current flows in a stacking direction of the magnetoresistive sensor, the magnetoresistive sensor comprising:
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a free layer having a magnetization direction that is affected by external magnetic fields and including a Heusler alloy layer and a Co-based amorphous metal layer, wherein the Co-based amorphous metal layer includes at least one element selected from a group consisting of Ta, Ti, Zr, Nb, Hf, W and B; a fixed layer which is stacked with the free layer and has a fixed magnetization direction; and a non-magnetic intermediate layer between the free layer and the fixed layer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification