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

Volume

56

Issue

6

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

1124

Lastpage

1127

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 H_dc les 5 Oe. The features include 1) a high voltage gain of -55 les V_gain les 55; and 2) a large current-to-voltage conversion of -2000 les alpha_I-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 H_dc.

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;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2009.1152

Filename

5075093