MAGNETIC SENSOR

摘要

This magnetic sensor (1) has a fixed-magnetization layer (20), a magnetic-field detection layer (40), and an intermediate layer (30). The fixed-magnetization layer consists of thin films, and the direction of magnetization thereof is fixed within the plane thereof. External magnetic fields cause the direction of magnetization of the magnetic-field detection layer to change. The intermediate layer is located between the fixed-magnetization layer and the magnetic-field detection layer, and the resistance of the intermediate layer varies as a function of the angle between the direction of magnetization of the fixed-magnetization layer and the direction of magnetization of the magnetic-field detection layer. The magnetization per unit area of the magnetic-field detection layer is less than 0.2 memu/cm2.