Resonant bending mode of Terfenol-D∕steel∕Pb(Zr,Ti)O3 magnetoelectric laminate composites

Abstract

Resonant bending-mode Tb1−xDyxFe2−y∕elastic-steel∕Pb(Zr,Ti)O3 magnetoelectric (ME) laminate composites have been investigated. An elastic-steel layer with a relatively high Qm significantly increases the resonant enhancement of the ME coefficient due to an increased effective Qm of the laminate. The three-phase ME laminates have a low first-order bending frequency of ∼5kHz, with a resonance-enhanced ME coefficient of ∼40V∕cmOe.

Giant magnetoelectric effect in Pb(Zr,Ti)O3-bimorph/NdFeB laminate device

“…A steel phase with a high mechanical Q increased the ME coefficient, while lowering the resonant frequency without increasing the size of the magnetostrictive phase. 11 In this case, lower resonance frequencies offer the potential to enhance the ME coefficient for applications such as small magnetic field sensors.…”

Enhanced resonant magnetoelectric coupling in frequency-tunable composite multiferroic bimorph structures

“…10,11 However, the limiting factor has been the ME coefficient ͓␣ ME = dE / dH ͑Refs. 1-5͔͒, that must be enhanced.…”

Investigation of external noise and its rejection in magnetoelectric sensor design

“…[3][4][5][6][7][8][9][10] The said laminated ME composites have ME voltage coefficients much larger than any other ME materials. It has accordingly been designated as a giant ME effect.…”