动态法测量材料的磁电效应  

Measurement of magnetoelectric effect by using a dynamic method

作　　者：曹东升[1] 江洪建[1] 胡渊[1] 龚国斌[1] 万建国[1] 

机构地区：[1]南京大学物理系,江苏南京210093

出　　处：《大学物理》2007年第9期56-59,共4页College Physics

基　　金：江苏省自然科学基金资助项目(BK2006123)

摘　　要：根据动态法测量磁电效应的基本原理,优化设计并建立了磁电效应测量系统,对其中的一些重要参数对磁电效应测量的影响进行了研究.结果表明,综合考虑测量需要,选择适当的测量参数,对于磁电效应的正确测量十分重要.适当增加线圈长度、减小线圈匝数以及减小交变磁场场强,都是提高磁电效应测量精度、减小测量误差的有效途径.The measuring principle of the magnetoelectric effect by dynamic method is described, and the corresponding measuring device is optimized to design and set up. The effect of some important parameters on the measuring results is investigated. It are shown that the choice of the suitable parameters is important for the measuring results and the actual reqiurement must be meeted during the design of the measuring device. It is advantageous for the improvement of the measuring precision and reduction of the measuring errors to enlarge the length of the coil,decrease the number of turns of the coil,and reduce the strength of the AC magnetic field.

关 键 词：磁电效应 磁电电压系数 直流偏磁场 交变磁场 单螺线管线圈 

分 类 号：TB332[一般工业技术—材料科学与工程]