新型振动样品磁强计测量材料磁性

摘要

简述新型振动样品磁强计测量原理,介绍自制的采用电动机驱动的振动样品磁强计,并通过用已知饱和磁矩的镍球对仪器进行定标,分别测量了铁氧体多晶小球和普通小钢球的磁化曲线,取得理想的实验结果.自制新型振动样品磁强计具有测量信号大和能判定磁矩方向的特点,该仪器可应用于高校近代物理实 验的教学.%This paper introduceds the measuring principle of a new type vibrating sample magnetometer and the home-made motor-driven vibrating sample magnetometer, and the magnetometer has been calibrated by the known saturation magnetic moment nickel ball and measured the magnetization curves of polycrystalline ferrite small ball and ordinary one respectively, and ideal experimental results are obtained. The home-made vibrating sample magnetometer with the characteristics of large measurement signal can detect the direction of magnetic moment, and the instrument can be used to modern physics experiments teaching in colleges and universities.