超磁致伸缩材料性能测量实验  

Measuring characteristics of giant magnetostrictive material

作　　者：陈宜保[1] 王文翰[1] 杨翔[1] 何元金[1] 王合英[1] 孙文博[1] 

机构地区：[1]清华大学物理系,北京100084

出　　处：《物理实验》2008年第12期13-15,20,共4页Physics Experimentation

基　　金：清华大学实验室创新基金资助(No.110008011)

摘　　要：采用比较法和电桥法测量了Terfenol-D样品的磁致伸缩系数,并采用共振法测量了Terfenol-D样品的磁机械耦合系数.将超磁致伸缩材料特性测量实验引入本科实验教学,可以使学生在近代物理实验课程的学习中接触到材料科学研究前沿领域的技术与知识,有助于提高学生的创新意识和创新能力,激发学生的学习兴趣.The magnetostrictive coefficient of Terfenol-D sample is measured by using comparison method and bridge method, and the magnetomechanical coupling coefficient of Terfenol-D sample is measured by using resonance method. The experiment on the the measurement of characteristics of giant magnetostrictive material has been provided in the class of advanced physics experiments for the undergraduates, in order to make students know of the trends of materials science and research, and to arouse the students＇ creative ideas and interests.

关 键 词：超磁致伸缩材料 磁致伸缩系数 磁机械耦合系数 

分 类 号：O493.4[理学—物理]