An Analysis of Piezomagnetic-Piezoelectric Semiconductor Unimorphs in Coupled Bending and Extension under a Transverse Magnetic Field

作     者：Lei Yang Jianke Du Ji Wang Jiashi Yang Lei Yang;Jianke Du;Ji Wang;Jiashi Yang

作者机构：Piezoelectric Device LaboratorySchool of Mechanical Engineering and MechanicsNingbo UniversityNingbo315211China Department of Mechanical and Materials EngineeringThe University of Nebraska-LincolnLincolnNE68588-0526USA 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2021年第34卷第5期

页      面：743-753页

核心收录：

学科分类：08[工学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.12072167 and 11972199) the special research funding from the Marine Biotechnology and Marine Engineering Discipline Group in Ningbo University,and the K.C.Wong Magana Fund through Ningbo University 

主　　题：Piezomagnetic Piezoelectric Semiconductor Unimorph 

摘      要：We study the response of a composite beam(unimorph)with a piezomagnetic layer and a piezoelectric semiconductor layer under a transverse magnetic field.A one-dimensional model for coupled bending and extension of the beam is derived from the three-dimensional theory.A simple and analytical solution of the model is obtained,showing that various electromechanical fields develop in the beam through piezomagnetic and piezoelectric couplings as well as *** particular,the mobile charges in the semiconductor layer redistribute themselves under the magnetic field.A coupling coefficient is defined to describe the strength of this magneto-semiconduction *** effects of physical and geometric parameters on the fields and the coupling coefficient are *** results are fundamental to piezotronics when magnetic effects are involved.