Title :
Magnetic sensor based on giant magnetoimpedance effect
Author :
Han, Bing ; Zhang, Tao
Author_Institution :
Coll. of Phys., Jilin Univ., Changchun
Abstract :
A giant magnetoimpedance (GMI) magnetic sensor is designed in the present work. Differing from the previously reported sensors, a couple of permanent magnets are applied to provide a bias magnetic field for the sensor probe which consists of commercial amorphous ribbon. A negative feedback-coil is adopted to improve the linearity of the sensor output. The sensor shows sensitivity of 1041 mV/Oe in the range of plusmn1 Oe, measurement precision of less than 0.11% at room temperature and good thermal stability in the temperature region between -20 and 30degC.
Keywords :
giant magnetoresistance; magnetic sensors; permanent magnets; thermal stability; bias magnetic field; commercial amorphous ribbon; giant magnetoimpedance magnetic sensor; negative feedback-coil; permanent magnets; room temperature; temperature -20 degC to 30 degC; thermal stability; Amorphous magnetic materials; Amorphous materials; Couplings; Linearity; Magnetic field measurement; Magnetic sensors; Permanent magnets; Probes; Temperature distribution; Temperature sensors;
Conference_Titel :
Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on
Conference_Location :
Kunming
Print_ISBN :
978-1-4244-2192-3
Electronic_ISBN :
978-1-4244-2193-0
DOI :
10.1109/ISAPE.2008.4735273
