Fujikura's FG (Flux-gate) magnetic sensor can precisely detect such small magnetic field as 10 (A / m) which is equivalent to the geomagnetic field level. Sensor element is composed of soft magnetic material, the excitationcoil and the pick-up coil. It detects the magnetic field from the response of the pick-up coil by applying alternating current to the excitation coil. By utilizing thin magnetic film formation technology by sputtering method and fine-pitch wiring technology, one-chip sensor which integrates soft magnetic material and coils has achieved miniaturization and high performance.
Besides, Fujikura has developed a signal processing IC to bring out the performance of the sensor element, and takes advantage of our technologies such as electromagnetic analysis, magnetic thin-film formation, magnetic anisotropy formation and magnetic characteristic evaluation in those developments.