Patent ID: 11287487

Abstract:
A magnetic sensor 1 includes: a thin film magnet 20 which is constituted by a hard magnetic material layer 103 and has magnetic anisotropy in an in-plane direction; and a sensitive part 30 including a sensitive element 31 sensing a magnetic field by a magnetic impedance effect, the sensitive element 31 being constituted by a soft magnetic material layer 105 laminated on the hard magnetic material layer 103, having a longitudinal direction and a short direction, and having uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction, in which the longitudinal direction faces in the direction of a magnetic field generated by the thin film magnet 20. The thin film magnet 20 and the sensitive element 31 are provided to constitute a magnetic circuit with a facing member provided outside to face one of magnetic poles of the thin film magnet 20.