Construction of Multi-functional Magnetic Semiconductor Sensor for Discriminating Plural Signals to Corresponding Outputs

Abstract

The magnetic semiconductor sensor MSS utilizing the magnetic and electrical properties of ferrimagnetic substance having various possible Curie temperatures shows similar characteristics in a temperature-sensitive magnetic core, a thermistor and a varistor. When applying plural signals to MSS, it discriminates automatically to magnetic and electrical outputs without mutual influence, so that a magnetic/electrical sensor with a single MSS is constructed. The temperature dependence, magnetic distortion and pyromagnetic MSS's magnetic property can be applied for temperature, pressure, supersonic and photo sensors. The electrical characteristic responds to humidity, gas and taste, further indicates the switching function at high voltage range. Thus, multi-ability MSS can be used as a combination sensor in the field of environmental monitor, remote sensing, artificial sensory device, photomagnetic conversion, biotechnology and power electronics. The basic characteristics and application for multisensor module and photo sensor of MSS is discussed here.