A mechanical-thermo-magneto model for self-biased magnetoelectric effect in laminated composite

作者：Yao, Hong; Shi, Yang; Gao, Yuan-Wen^*

来源：Journal of Magnetism and Magnetic Materials, 2016, 401: 1046-1053.

DOI：10.1016/j.jmmm.2015.11.008

• Magnetoelectric effect
• Self-bias
• Temperature
• Pre-stress

In this paper, a mechanical-thermo-magneto model for self-biased magnetoelectric effect in laminated composite with high-permeability materials is established. Considering the effects of demagnetization, pre-stress and temperature, the effective magnetic field and piezomagnetic coefficient of magnetostrictive layers are calculated. Then, the effects of temperature and pre-stress on ME effect are investigated. Finally, the combined effect of temperature and pre-stress on zero-bias ME voltage coefficient is discussed in detail to achieve a good ME conversion efficiency. The numerical results show that due to the occurrence of the additional magnetic field from high-permeability materials, available self-biased ME effect can be obtained in the proposed model. The operating temperature affects not only the peak value but also the initial value of ME voltage coefficient. Also, pre-stress can change the temperature effect on the zero-bias ME voltage coefficient obviously.

• 出版日期2016-3-1
• 单位兰州大学