5 - Measuring parameters

Magnetotransistors can be divided into two major groups: vertical and lateral types. In both cases, when the magnetic field is applied to the magnetotransistor, the Lorenz force acts on flowing carriers, causing deflection. Depending on the structure, the deflection of the carriers may further create a Hall voltage along the emitter-base junction and in turn, cause emitter injection modulation or asymmetrical concentration of carriers within the device, causing a local modulation of conductivity called magneto-concentration. If the operation of the magnetotransistor is based solely on carrier deflection, the magnetotransistor exhibit linear response to the magnetic field.

Transmitting linear polarized beam in an optical fibre, strong magnetic field will change the plane of polarisation. This phenomenon is called Farady effect.