A uniform model for direct and converse magnetoelectric effect in laminated composite

Abstract

Direct and converse magnetoelectric effects are two opposite processes, which were integrated in a model based on equivalent circuit. Following the piezoelectric and magnetostrictive constitutive equations, we obtained magnetic-mechanical-electric equations, and then built a symmetric equivalent circuit about the magnetoelectric coupling. We equivalently analyzed the direct and converse magnetoelectric effects with this equivalent circuit. The numerical calculations fit the reported results very well, including the magnetoelectric changes with the thickness ratio and frequency, the relative lower converse magnetoelectric resonance frequency, and the phase increase of π around the direct and converse magnetoelectric resonance frequencies. This model helps us understand the magnetoelectric properties deeply, especially for the converse magnetoelectric effect.

Enhanced magnetoelectric properties of the laminated BaTiO3/CoFe2O4 composites

“…Fig. 11 shows that the ME coupling is strongly dependent on the relative mass ratio of BTO and CFO [17]. Both a E31 and a E33 of the composites nearly linearly increase with the content of CFO and reach the maximum value when x = 0.5-0.6 at 1 kHz.…”

Low temperature sintering and magnetoelectric properties of laminated BaTiO3/BiY2Fe5O12 composites

“…Fig. 11 shows the ME coupling is strongly dependent on the relative content of BTO and BYIG layers [19,20]. It also illustrates the variation of largest ME coefficient with the content of BYIG.…”

Directional magnetoelectric effect in multi-electrode Pb(Zr,Ti)O3/Ni cylindrical layered composite

“…ME laminates with different shapes and configurations have been made. They have different vibration modes, such as bending and radial vibration in disk laminates [9], bending and longitudinal vibration in rectangular composites and torsion vibration in other structures [10][11][12][13]. It has been demonstrated that Ni/PZT and Ni/PZT/Ni cylindrical ME laminates made by electroplating have giant ME coupling with radial and axial vibration modes [14,15].…”