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Surface Acoustic Wave Magnetic Sensor using Galfenol Thin Film

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3 Author(s)
Weiyang Li ; Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA ; Dhagat, P. ; Jander, A.

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.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 11 )