软磁材料磁导率测量实验探索

摘要

软磁材料磁滞回线细长，计算精度不高时忽略其磁滞，可定义磁感应强度与磁场强度的比为磁导率。利用霍尔效应实验仪对螺线管加载软磁材料前后一端的磁感应强度进行测量，计算出该端点处的磁场强度即可计算出该种软磁材料的磁导率，实验表明在材料磁饱和后，磁导率迅速降低。%Since the hysteresis loop of the soft magnetic material is thin,in the case of calculation accuracy is not high that the magnetic hysteresis can be neglected,so magnetic permeability can be defined as the ratio of magnetic induction and magnetic field strength.under the condition with and without the iron core,magnetic in-duction intensity can be measured at one end of the solenoid by Hall effect experiment instrument,calculate magnetic field intensity on the axis of the solenoid,then the magnetic permeability of the soft magnetic matrial can be calculated based on the magnetic intensity.Afer the materia reach the magnetic saturation,experiments show that the magnetic permeability is rapidly decreased.