Title :
Tunable features of magnetoelectric transformers
Author :
Dong, Shuxiang ; Zhai, Junyi ; Priya, Shashank ; Li, Jie-Fang ; Viehland, Dwight
Author_Institution :
Coll. of Eng., Peking Univ., Beijing
fDate :
6/1/2009 12:00:00 AM
Abstract :
We have found that magnetostrictive FeBSiC alloy ribbons laminated with piezoelectric Pb(Zr,Ti)O3 fiber can act as a tunable transformer when driven under resonant conditions. These composites were also found to exhibit the strongest resonant magnetoelectric voltage coefficient of 750 V/ cm-Oe. The tunable features were achieved by applying small dc magnetic biases of -5 les Hdc les 5 Oe. The features include 1) a high voltage gain of -55 les Vgain les 55; and 2) a large current-to-voltage conversion of -2000 les alphaI-V les 2000 (V/A). The tunable transformer features can be attributed to large changes in the piezomagnetic coefficient and permeability of the magnetostrictive phase under Hdc.
Keywords :
boron alloys; iron alloys; laminates; lead compounds; magnetic permeability; magnetoelectric effects; magnetostriction; magnetostrictive devices; piezoelectric materials; silicon alloys; transformers; FeBSiC-Pb(ZrTi)O3; current-voltage conversion; dc magnetic biases; magnetoelectric transformers; magnetostrictive alloy ribbon laminates; permeability; piezoelectric fiber; piezomagnetic coefficient; resonant magnetoelectric voltage coefficient; tunable transformer features; Magnetic resonance; Magnetostriction; Permeability; Transformers; Computer-Aided Design; Electronics; Energy Transfer; Equipment Design; Equipment Failure Analysis; Magnetics; Reproducibility of Results; Sensitivity and Specificity;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2009.1152
