Title :
Differential-mode vibrational noise cancellation structure for Metglas/Pb(Zr,Ti)O3 fiber magnetoelectric laminates
Author :
Gao, Junqi ; Zhai, Junyi ; Shen, Ying ; Shen, Liangguo ; Gray, David ; Li, Jiefang ; Finkel, Peter ; Viehland, D.
Author_Institution :
Dept. of Mater. Sci. & Eng., Virginia Tech, Blacksburg, VA, USA
fDate :
8/1/2011 12:00:00 AM
Abstract :
A differential structure which has the ability to reject external vibrational noise for Metglas/Pb(Zr,Ti)O3 (PZT) fiber-based magnetoelectric (ME) heterostructures has been studied. This type of ME structure functions better than conventional sensors as a magnetic sensor when used in an environment in which vibrational isolation is impractical. Sensors fabricated with this differential mode structure can attenuate external vibrational noise by about 10 to 20 dB at different frequencies, while simultaneously having a doubled ME voltage coefficient. Interestingly, in addition to offering a means of mitigating vibrational noise, this ME structure offers the potential to be a hybrid sensor, separating magnetic and acoustical signals.
Keywords :
laminates; lead compounds; magnetic sensors; magnetoelectric effects; metallic glasses; noise; sandwich structures; vibrations; Metglas-PZT fiber magnetoelectric laminates; Metglas-PZT fiber-based magnetoelectric heterostructures; PZT; acoustical signal; differential-mode vibrational noise cancellation structure; doubled magnetoelectric voltage coefficient; external vibrational noise; hybrid sensor; magnetic sensor; magnetic signal; vibrational isolation; Amorphous magnetic materials; Laminates; Magnetic sensors; Magnetoelectric effects; Magnetostriction; Noise;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2011.1980
