Amperometric Mode of Operation of Bipolar Magnetotransistor Sensors

Abstract

A new amperometric mode of operation of bipolar magnetotransistor (AMOBMT) is studied both theoretically and experimentally. This mode is achieved without reverse-biasing of the collector junctions and by using the current between the two ‘floating’ collectors as an information signal. The output current is a linear and anti-symmetrical function of the applied magnetic field. AMOBMT has some advantages with respect to the conventional mode of operation of bipolar magnetotransistor which utilizes reverse-biasing of the collector junctions.