Comprehensive analysis of direct and converse magnetoelectric effects in S-S mode bilayered composites

• Published in: Journal of magnetism and magnetic materials 2020-05, Vol.501, p.166411, Article 166411
• Main Authors: Zhang, Xiaoli, Zhou, Jian-Ping, Yao, Xi, Yang, Zupei, Zhang, Guang-Bin
• Format: Article
• Language: English
• Subjects: Composite materials; Converse magnetoelectric effect; Direct magnetoelectric effect; Equivalent circuits; Magnetic fields; Magnetic-mechanical-electric equivalent circuit; Resonance; S-S mode; Transducers
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2020.166411

•Symmetric equivalent circuit model was proposed to analyze DME and CME effects.•The experimental results show a good agreement with the prediction from the theory.•A remarkable field sensitivity and higher DME and CME coefficients, and high resonance frequency were found. There are few experimental studies on the shear-shear (S-S) mode magnetoelectric (ME) composites, especially near the resonance frequency because of their complex sample preparation and high resonance frequency. What’s more, theoretical studies on the S-S mode magnetoelectric composites is still blank. In this article, an equivalent circuit model was proposed to analyze the direct and converse magnetoelectric (DME and CME) effects in an S-S mode ME bilayered composite. Then, the composite was experimentally studied, showing a good agreement with the theoretical predication. The S-S mode has a remarkable field sensitivity and much high DME and CME coefficients, reaching 27.5 V/(cm·Oe) and 3 × 10-6 s/m, respectively, in this simple bilayered composite under the DC magnetic field of 1800 Oe near the resonance frequency. The composite shows a prospect of applications in high frequency ME transducers, energy capture devices and magnetic field sensitive sensors.