Physical Sensors: Magnetic Sensors

The category magnetic sensor encompasses sensors able to detect a magnetic field and derive characteristics about it, such as the strength of the field, the direction, and the flux. A diversity of sensor types has been developed, based on varying physical phenomena associated with magnetic fields. The chapter provides a general overview of magnetometers based on the Hall effect, magnetoresistance, magnetostriction, magnetoimpedance, as well as quantum phenomena. It briefly describes them per their working principle and comments on common materials and applications.