霍尔效应法测磁场实验误差研究  

Study on Experimental Error of Measure the Magnetic Field by Hall Effect Method

作　　者：罗浩[1] 向泽英[1] 谢英英[1] 马婷婷[1] 

机构地区：[1]西南科技大学,四川绵阳621010

出　　处：《大学物理实验》2015年第4期99-102,共4页Physical Experiment of College

基　　金："十一五"国家科技支撑计划(2008BAE60B07B);西南科技大学实验技术项目(15syjs-17)

摘　　要：从机理上研究了霍尔效应法测定螺线管磁场实验的主要误差来源,分析了误差因素的具体特点,导出了准确的计算公式,成功消除了主要误差,研究结果表明:霍尔效应附效应产生的电势差和接触电势差以及不对称因素导致的误差均可采用对称测量法予以消除,这为霍尔效应实验教学与研究提供了更为清晰的理论参考和更为精确的测量方法。Study the main error sources of the experiment of determination of solenoid magnetic field by Hall effect method from the mechanism, analysis of the specific characteristics of the error factors, accurate calcula- tion formula is deduced, successfully eliminated the main error, the results indicate that：the potential difference generated by additional effect of Hall effect, the contact potential difference, and the error caused by asymmet- ric factors can be eliminated by symmetrical measurement, this provides more theoretical reference clear and more accurate measurement method for teaching and research in Hall effect experiment.

关 键 词：霍尔效应 附加电势差 对称测量法 

分 类 号：O441.5[理学—电磁学]