Low-Frequency Magnetoelectric Effects in Magnetostrictive–Piezoelectric Bilayers: Longitudinal and Bending Deformations

Journal of Composites Science

Jitao Zhang¹  Peng Zhou²  Tianjin Zhang²  Dmitry Filippov³  Gopalan Srinivasan⁴  Jiahui Liu⁴  Ying Liu⁴  Bingfeng Ge⁴ 

[1] College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;Department of Materials Science and Engineering, Hubei University, Wuhan 430062, China;Institute of Electronic and Information Systems, Yaroslav-the-Wise Novgorod State University, 173003 Veliky Novgorod, Russia;Physics Department, Oakland University, Rochester, MI 48309, USA;

关键词: multiferroic composites;    magnetostriction;    piezoelectricity;    magnetoelectric effect;   

DOI  :  10.3390/jcs5110287

来源: DOAJ

【 摘 要 】

A model for the low-frequency magnetoelectric (ME) effect that takes into consideration the bending deformation in a ferromagnetic and ferroelectric bilayer is presented. Past models, in general, ignored the influence of bending deformation. Based on the solution of the equations of the elastic theory and electrostatics, expressions for the ME voltage coefficients (MEVCs) and ME sensitivity coefficients (MESCs) in terms of the physical parameters of the materials and the geometric characteristic of the structure were obtained. Contributions from both bending and planar deformations were considered. The theory was applied to composites of PZT and Ni with negative magnetostriction, and Permendur, or Metglas, both with positive magnetostriction. Estimates of MEVCs and MESCs indicate that the contribution from bending deformation is significant but smaller than the contribution from planar deformations, leading to a reduction in the net ME coefficients in all the three bilayer systems.

【 授权许可】

Unknown