Title :
Surface Acoustic Wave Magnetic Sensor using Galfenol Thin Film
Author :
Li, Weiyang ; Dhagat, Pallavi ; Jander, Albrecht
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
The performance of a surface acoustic wave (SAW) magnetic field sensor using galfenol (FeGa) thin film is investigated in this effort. We measure the change in the SAW velocity as a function of an externally applied magnetic field for galfenol films of varying thicknesses. A maximum change of 0.64%, greater than results reported for similar sensors, is obtained with a 500 nm thick film.
Keywords :
iron compounds; magnetic field measurement; magnetic sensors; FeGa; SAW velocity; externally applied magnetic field; galfenol thin film; surface acoustic wave magnetic field sensor; Magnetic resonance; Magnetic sensors; Magnetoacoustic effects; Magnetoelectric effects; Magnetostriction; Substrates; Surface acoustic waves; Galfenol thin film; magnetic sensor; surface acoustic wave (SAW);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2201928
