Magnetic sensor based on giant magnetoimpedance effect

Author

Han, Bing ; Zhang, Tao

Author_Institution

Coll. of Phys., Jilin Univ., Changchun

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

558

Lastpage

560

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISAPE.2008.4735273

Filename

4735273