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Title: Enhanced magnetoelectric effect in heterostructure of magnetostrictive alloy bars and piezoelectric single-crystal transformer
Authors: Leung, Chung Ming
Or, Derek Siu-wing
Wang, Feifei
Ho, Siu-lau
Luo, Haosu
Subjects: Dysprosium alloys
Iron alloys
Lead compounds
Magnetoelectric effects
Piezeoelectric transducers
Terbium alloys
Issue Date: Jan-2011
Publisher: American Institute of Physics
Source: Review of scientific instruments, Jan. 2011, v. 82, no. 1, 013903, p. 1-5.
Abstract: We report an enhanced magnetoelectric (ME) effect in a heterostructure consisting of a long-type, longitudinally–longitudinally polarized 0.71Pb(Mg₁/₃Nb₂/₃)O₃–0.29PbTiO₃ (PMN-PT) piezoelectric single-crystal transformer with its input part sandwiched between two longitudinally magnetized Tb₀.₃Dy₀.₇Fe₁.₉₂ (Terfenol-D) magnetostrictive alloy bars. The observed ME effect has two independent operational modes: namely, ME sensing mode and ME transduction mode. The ME sensing mode features a large ME voltage coefficient (αV) of ∼0.32 V/Oe over a flat frequency range of 1–50 kHz, while the ME transduction mode possesses two colossal resonance αV of 7.6 and 7.9 V/Oe, corresponding to the first and second longitudinal resonances, at 56.2 and 127.9 kHz, respectively. This enhanced dual-mode ME effect not only enables the application potential of the heterostructure, but also advances the technology of power-free ME sensors and transducers.
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., Review of scientific instruments 82, 013903 (2011) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.3529439
ISSN: 0034-6748 (print)
1089-7623 (online)
Appears in Collections:EE Journal/Magazine Articles

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