Magnetic Sensor, Magnetic Detector, and Magnetic Head

摘要

A magnetic sensor comprises a first ferromagnetic body 12A, a second ferromagnetic body 12B, a channel 7 extending from the first ferromagnetic body 12A to the second ferromagnetic body 12B, a magnetic shield S2 covering the channel 7, and an insulating film 7b disposed between the channel 7 and the magnetic shield S2, while the magnetic shield S2 has a through-hole H extending toward the channel 7.