Magnetoresistance effect device having magnetic member with concave portion
AssigneeTDK Corporation
InventorNaomichi Degawa
Life of this patent
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Abstract
A magnetoresistance effect device includes: a magnetoresistance effect element formed by performing lamination such that a spacer layer is disposed between a first ferromagnetic layer and a second ferromagnetic layer; a high frequency signal line arranged on one side of the magnetoresistance effect element in a direction parallel to a lamination direction; and a magnetic member arranged at a position further away from the one side than the high frequency signal line when viewed from the magnetoresistance effect element, wherein the magnetic member has a concave portion which is recessed in a direction away from the high frequency signal line in a surface facing the high frequency signal line.
Claims8
A magnetoresistance effect device, comprising:
- a magnetoresistance effect element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer, the first ferromagnetic layer, the second ferromagnetic layer and the spacer layer being laminated in a lamination direction with the spacer layer between the first ferromagnetic layer and the second ferromagnetic layer;
- a high frequency signal line arranged on one side of the magnetoresistance effect element in a direction parallel to the lamination direction;
- and
- a magnetic member arranged on the one side of the magnetoresistance effect element,
- wherein the magnetic member is arranged further away from the magnetoresistance effect element in the direction parallel to the lamination direction than the high frequency signal line,
- wherein the magnetic member has a concave portion which is recessed in a direction away from the high frequency signal line in a surface facing the high frequency signal line, and
- wherein at least a part of a region which is not recessed of the surface in the magnetic member facing the high frequency signal line and the magnetoresistance effect element overlap when viewed in a direction parallel to the lamination direction.
A magnetoresistance effect device, comprising:
- a magnetoresistance effect element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer, the first ferromagnetic layer, the second ferromagnetic layer, and the spacer layer being laminated in a lamination direction with the spacer layer between the first ferromagnetic layer and the second ferromagnetic layer;
- a high frequency signal line arranged on one side of the magnetoresistance effect element in a direction parallel to the lamination direction;
- and
- a magnetic member arranged on the one side of the magnetoresistance effect element,
- wherein the magnetic member is arranged further away from the magnetoresistance effect element in the direction parallel to the lamination direction than the high frequency signal line,
- wherein the magnetic member has a concave portion which is recessed in a direction away from the high frequency signal line in a surface facing the high frequency signal line, and
- wherein the magnetic member is wound with a coil, or the magnetic member is composed of a hard magnetic material.
A magnetoresistance effect device, comprising:
- a magnetoresistance effect element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer, the first ferromagnetic layer, the second ferromagnetic layer, and the spacer layer being laminated in a lamination direction with the spacer layer between the first ferromagnetic layer and the second ferromagnetic layer;
- a high frequency signal line arranged on one side of the magnetoresistance effect element in a direction parallel to the lamination direction;
- and
- a magnetic member arranged on the one side of the magnetoresistance effect element,
- wherein the magnetic member is arranged further away from the magnetoresistance effect element in the direction parallel to the lamination direction than the high frequency signal line,
- wherein the magnetic member has a concave portion which is recessed in a direction away from the high frequency signal line in a surface facing the high frequency signal line, and
- wherein the magnetic member has a magnetization direction that is fixed by joining an antiferromagnetic material to the magnetic member.
Dependencies are inferred from the claim text.