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Title: Dual-resonance converse magnetoelectric and voltage step-up effects in laminated composite of long-type 0.71Pb(Mg₁/₃Nb₂/₃)O₃-0.29PbTiO₃piezoelectric single-crystal transformer and Tb₀.₃Dy₀.₇Fe₁.₉₂magnetostrictive alloy bars
Authors: Leung, Chung Ming
Or, Derek Siu-wing
Wang, Feifei
Ho, Siu-lau
Subjects: Bars
Dysprosium alloys
Electromagnetic induction
Iron alloys
Lead compounds
Magnesium compounds
Magnetoelectric effects
Piezoelectric materials
Terbium alloys
Issue Date: 15-May-2011
Publisher: American Institute of Physics
Source: Journal of applied physics, 15 May 2011, v. 109, no. 10, 104103, p. 1-6.
Abstract: We report a dual-resonance converse magnetoelectric effect and a dual-resonance voltage step-up effect in a laminated composite made by sandwiching the output (or secondary) section of a long-type 0.71Pb(Mg₁/₃Nb₂/₃)O₃-0.29PbTiO₃(PMN–PT) piezoelectric single-crystal transformer having a longitudinal-longitudinal polarization between two Tb₀.₃Dy0₀.7Fe₁.₉₂ (Terfenol-D) magnetostrictive alloy bars having a longitudinal magnetization. The report ed converse magnetoelectric effect originates from the mechanically mediated resonance converse piezoelectric effect in the PMN–PT transformer and resonance converse magnetostrictive effect in the Terfenol-D bars. The additional voltage step-up effect results from the mechanically mediated resonance converse and direct piezoelectric effects in the PMN–PT transformer. The composite shows two sharp resonance peaks of 0.39 and 0.54 G/V in converse magnetoelectric coefficient (αᵦ=dB/dV[sub in]) and of 1.4 and 2.1 in voltage step-up ratio (V[sub out]/V[sub in]) at about 54 and 120 kHz, corresponding to the half- and full-wavelength longitudinal mode resonances, respectively. The measured magnetic induction (B)exhibits good linear relationships to the applied ac voltage (V[sub in]) with amplitude varying from 10 to 100 V in both resonance and nonresonance conditions. These dual-resonance effects make the composite great promise for coil-free electromagnetic device applications.
Rights: © 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in C. M. Leung et al., J. Appl. Phys. 109, 104103 (2011) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.3587574
ISSN: 0021-8979 (print)
1089-7550 (online)
Appears in Collections:EE Journal/Magazine Articles

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