MAGNETIC SENSOR DEVICE

摘要

A magnetic sensor device includes a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of said axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body.

主权项

1. A magnetic sensor device comprising
an annular magnetic body, a coil wound around the magnetic body, the coils applying a magnetic field which rotates 360 degrees by the half way point in the peripheral direction of the magnetic body, and a magnetoresistance effect element arranged at the center of the annular magnetic body and comprising a fixed layer having a magnetization direction fixed in the direction of the magnetic field to be measured.