Title :
Magnetic field sensing by an electrostrictive/magnetostrictive composite resonator
Author :
Yoshizawa, N. ; Yamamoto, I. ; Shimada, Y.
Author_Institution :
Dept. of Electr. Eng., Salesian Polytech., Tokyo, Japan
Abstract :
A magnetic field sensor made of an electrostrictive plate and magnetostrictive layers is investigated. Its response to an external field suggests that the sensor has sensitivity high enough to detect terrestrial field. An analysis to predict the basic behavior was developed. Deviation of the experiments from the theoretical curve was attributed to complicated domain structures. Performance of a feedback system to improve the characteristics is demonstrated. It is expected that the performance would be improved appreciably by fabricating them by a thin film process.
Keywords :
crystal resonators; electrostriction; magnetic field measurement; magnetic sensors; magnetic thin film devices; magnetostrictive devices; micromechanical resonators; transducers; electrostrictive composite resonator; magnetic field sensor; magnetostrictive composite resonator; thin film; Amorphous magnetic materials; Electrostriction; Frequency; Magnetic fields; Magnetic materials; Magnetic sensors; Magnetostriction; Resonance; Sensor phenomena and characterization; Soft magnetic materials; Amorphous ribbon; magnetic field sensor; magnetoelastic effect; quartz resonator;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855168
