Influences of the Shape of Magnetic Material on the Magnetoelectric Properties of the PZT/Metglas Composite  

作　　者：LI Jun ZHANG Yuan LI Yingwei ZHU Yongdan JIANG Renhui LI Meiya 

机构地区：[1]Key Laboratory of Artificial Micro/Nano Structures of the Ministry of Education,School of Physics and Technology,Wuhan University,Wuhan 430072,Hubei,China [2]School of Civil Engineering,Wuhan University,Wuhan 430072,Hubei,China [3]School of Information Engineer,Hubei Minzu University,Enshi 445000,Hubei,China

出　　处：《Wuhan University Journal of Natural Sciences》2016年第2期159-164,共6页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(51372174,51132001,11364018 and J1210061);Natural Science Foundation of Hubei Province(2014CFB610);the Excellent Young Innovation Team Project of Hubei Province(T201429)

摘　　要：In this paper,the influences of the shape of magnetic material on the magnetoelectric（ME）properties of PZT/Metglas magnetoelectric（ME）composites have been investigated.The results indicate that,with the decrease of the waist length（L w）of the dumbbell-shaped Metglas,the magnetic flux density in the center region and ME coefficients（αME）of the composites increase,while the optimal bias magnetic field H dc decreases on the contrary.In an AC magnetic field of 1 k Hz,the maximumαME（αMax）of the composite with L w=20 mm exhibits 1.3 times larger than that of the one with L w=50 mm,and the optimal H dc deceases by 15%.At the resonant frequencies of each composites,αMax is enhanced by1.3 times as L w decreases from 50 to 20 mm.The simulation made by Comsol Multiphysics and the theoretical analysis based on an equivalent magnetic circuit confirm the experimental results.In this paper,the influences of the shape of magnetic material on the magnetoelectric（ME）properties of PZT/Metglas magnetoelectric（ME）composites have been investigated.The results indicate that,with the decrease of the waist length（L w）of the dumbbell-shaped Metglas,the magnetic flux density in the center region and ME coefficients（αME）of the composites increase,while the optimal bias magnetic field H dc decreases on the contrary.In an AC magnetic field of 1 k Hz,the maximumαME（αMax）of the composite with L w=20 mm exhibits 1.3 times larger than that of the one with L w=50 mm,and the optimal H dc deceases by 15%.At the resonant frequencies of each composites,αMax is enhanced by1.3 times as L w decreases from 50 to 20 mm.The simulation made by Comsol Multiphysics and the theoretical analysis based on an equivalent magnetic circuit confirm the experimental results.

关 键 词：PZT/Metglas composites magnetoelectric coefficient dumbbell-shape  waist length equivalent magnetic circuit finite element simulation 

分 类 号：O469[理学—凝聚态物理]