Vortex magnetic field sensor based on ring-type magnetoelectric laminate

Shuxiang Dong; Jie-Fang Li; Viehland, D.
September 2004
Applied Physics Letters;9/20/2004, Vol. 85 Issue 12, p2307
Academic Journal
It has been found that ring-type magnetoelectric laminate composites of circumferentially magnetized magnetostrictive TERFENOL-D and a circumferentially poled piezoelectric Pb(Zr,Ti)O3 have high sensitivity to a vortex magnetic field. At room temperature, an induced output voltage from this ring laminate exhibited a near-linear response to an alternating current (ac) vortex magnetic field Hac over a wide magnetic field range of 10<9,Hac<10-3 T at frequencies between sub-Hz and kHz.


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