Magnetoelectric anisotropy in laminate composite for detecting magnetic field

作者：Lv, Li; Yao, Xi; Gan, Lin; Zhang, Xiaoli; Zhou, Jian-Ping^*

来源：Functional Materials Letters, 2019, 12(1): 1850098.

DOI：10.1142/S1793604718500984

• Laminates
• magnetoelectric anisotropy
• magnetoelectric effect

Magnetoelectric anisotropy was researched in a disc laminate composite. The magnetoelectric coefficient exhibits a cosine characteristic with the angle between the direction of de bias magnetic field H-bias, and small ac sine magnetic signal delta H-ac, no matter how delta H-ac rotates. Correspondingly, there are only two values of phase shift when the angle varies from 0 to 360 degrees . These two phase shifts only depend on delta H-ac mapping on H-bias, i.e., sign of dot product of delta H-ac and H-bias, [Sgn(delta H-ac. H-bias)], implying that delta H(ac)cos theta produces charge through the magnetoelectric effect. Then, a simple device was proposed to detect the magnitude and direction of ac magnetic field.

• 出版日期2019-2
• 单位中国人民解放军信息工程大学; 陕西师范大学; 安康学院