Magnetic field curve distortion is found at the position of magnetic pole edge in Hall effect experiment, using HL-5 Hall effect testing instrument.
在利用HL-5霍尔效应测试仪测量磁场的实验中，发现有些仪器的测量曲线在磁极边缘附近存在畸变。
The coefficient of Hall-effect decided by experiment can determine the type of semiconductor materials, the concentration of carrier, the mobility of carrier and other important parameters.
通过霍尔效应实验测定的霍尔系数，能够判断半导体材料的导电类型、载流子浓度及载流子迁移率等重要参数。
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