Open AccessBar-shaped Magnetoelectric Gyrator
Author(s) -
Chung Ming Leung,
Xin Zhuang,
Jiefang Li,
Dwight Viehland
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1407/1/012025
Subject(s) - gyrator , materials science , resonance (particle physics) , magnetostriction , piezoelectricity , bar (unit) , composite material , optoelectronics , nuclear magnetic resonance , electrical engineering , magnetic field , physics , engineering , particle physics , quantum mechanics , meteorology
This paper reports a dual-resonance power transfer effect and a dual-resonance I-V conversion for a bar-shaped ME gyrator made from a hard Pb(Zr x Ti 1−x )O 3 (PZT) ceramic bar having a transverse polarization and a Tb 0.3 Dy 0.7 Fe 1.92 (Terfenol-D) magnetostrictive alloy bar having a longitudinal magnetization bonded along their cross-section areas. A bar-shaped provides several advantages to a ME gyrator; such as dual resonance frequency along its length direction, as well as half-wave and full-wave vibration modes; reduced laminate bonding area avoiding adhesive breakdown; and ease of fabrication. The reported magnetoelectric gyrator effect originates from the mechanically mediated resonance piezoelectric and magnetostrictive effects in the PZT and Terfenol-D bars, respectively. We studied the influence of the length ratio between the Terfenol-D and piezoelectric bars. A power efficiency of 69.4% was obtained at the half wavelength resonance of 21.47kHz under optimal H Bias =1000 Oe and low power conditions. Under higher power drive of 8W/in 3 , an efficiency of 60.2% was found. This dual-resonance ME gyrator effect offers much promise in power transfer devices for power electronic applications.