Bonded cylindrical Terfenol-D-epoxy/PZT magnetoelectric composites prepared by the one-step compression molding

Yang Song,Bo Liu,Shengen Zhang,Alex A Volinsky,Zhijun Zuo,De’An Pan,Jiao Wang

doi:10.1063/1.4914106

Yang Song, Bo Liu + Show 5 more

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https://doi.org/10.1063/1.4914106

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Abstract

Magnetoelectric composites with bonded Terfenol-D-epoxy (TDE) and PZT cylindrical ceramics were prepared by the one-step compression molding at room temperature. The PZT cylindrical ceramics not only provided the piezoelectric phase, but also acted as a mold for TDE. The axial ME voltage coefficient of the cylindrical composites, αE,A, was studied. By contrast, the new structure has a larger ME voltage coefficient compared with the effective planar laminated composites due to the self-bound state. This study decreases the ME composite dimensions, making it a promising candidate for the magnetic field sensor applications.

Highlights

Multiferroic composites made by combining ferroelectric and ferromagnetic materials have been rapidly developing due to the excellent magnetoelectric (ME) effect
Magnetoelectric composites with bonded Terfenol-D-epoxy (TDE) and PZT cylindrical ceramics were prepared by the one-step compression molding at room temperature
The new structure has a larger ME voltage coefficient compared with the effective planar laminated composites due to the self-bound state

Summary

Introduction

Multiferroic composites made by combining ferroelectric and ferromagnetic materials have been rapidly developing due to the excellent magnetoelectric (ME) effect. The TDE/PZT plate layered composites were produced by the bonding method, resulting in the excellent voltage coefficient performance. Pan et al.[18,19] prepared Ni/PZT cylindrical composites and discovered that they have larger ME voltage coefficients compared with the plate layered composites due to the fact that cylinder outer and inner faces are constrained in the axial, radial and circumferential directions (the self-bound state). These research efforts have demonstrated that better ME properties can be obtained through structural design. These self-bound composites are more efficient in terms of materials and space use. TDE displays better magnetoelastic performance than nickel (Ni).[15]

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