| 主权项 |
1. A magnetic sensor configured to detect a component in a first direction of an external magnetic field, comprising a magnetoresistive element and a bias field generation unit, wherein
the magnetoresistive element includes a magnetization pinned layer having a magnetization pinned in a direction parallel to the first direction, a free layer having a magnetization that varies depending on the component in the first direction of the external magnetic field, and a nonmagnetic layer interposed between the magnetization pinned layer and the free layer, the magnetization pinned layer, the nonmagnetic layer and the free layer are stacked to be adjacent in a second direction orthogonal to the first direction, the free layer receives an interlayer coupling magnetic field in the direction parallel to the first direction resulting from the magnetization pinned layer, the bias field generation unit includes at least one magnet and applies a bias magnetic field to the free layer, the magnetoresistive element and the at least one magnet are aligned in a third direction orthogonal to the first and second directions, the at least one magnet has an end face facing the magnetoresistive element, the at least one magnet has a magnetization in a direction inclined with respect to a direction perpendicular to the end face, the magnetization of the at least one magnet includes a first magnetization component parallel to the first direction and a second magnetization component parallel to the third direction, the bias magnetic field includes a first magnetic field component in a direction opposite to the direction of the interlayer coupling magnetic field and a second magnetic field component parallel to the third direction, the direction of the first magnetic field component is opposite to that of the first magnetization component, and the second magnetic field component is in the same direction as the second magnetization component. |
