CPP magnetic sensing element and method for making the same
AssigneeAlps Electric Co., Ltd.
InventorYoshihiro Nishiyama
Life of this patent
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Abstract
A magnetic sensing element includes a composite film, a lower shield layer, and a lower electrode layer and an upper electrode layer for supplying a current perpendicular to the composite film. The composite film has an antiferromagnetic layer, a pinned magnetic layer, a nonmagnetic layer, and a free magnetic layer. The composite film has a top face and two side faces in a track width direction. Each of the two side faces has a bent position. The angle defined by the side face below the bent position and the top face is larger than the angle defined by the side face above the bent position and the top face. The bent portion preferably lies on the lower electrode layer or the lower shield layer.
Claims24
A magnetic sensing element comprising:
- a composite film comprising:
- an antiferromagnetic layer;
- a pinned magnetic layer;
- a nonmagnetic layer;
- and
- a free magnetic layer;
- and
- a lower electrode layer and an upper electrode layer for supplying a current perpendicular to the composite film,
- wherein the composite film has a top face and two side faces in a track width direction, each of the two side faces has a bent position, and the angle defined by the side face below the bent position and the top face is larger than the angle defined by the side face above the bent position and the top face.
A magnetic sensing element comprising:
- a composite film comprising:
- an antiferromagnetic layer;
- a pinned magnetic layer;
- a nonmagnetic layer;
- and
- a free magnetic layer;
- a lower shield layer;
- and
- a lower electrode layer and an upper electrode layer for supplying a current perpendicular to the composite film,
- wherein the composite film has a top face and two side faces in a track width direction, each of the side faces has a bent portion on one of the lower electrode layer and the lower shield layer, and the angle defined by the side face below the bent portion and the top face of the composite film is larger than that defined by the side face above the bent portion and the top face.
Dependencies are inferred from the claim text.