用于近代物理实验教学的振动样品磁强计

Vibrating sample magnetometer used in the teaching of modern physics experiment

简述了振动样品磁强计的工作原理,采用电磁驱动方式自制了振动样品磁强计.利用该仪器测试了各向同性永磁钡铁氧体的永磁特性,与商业振动样品磁强计的测量结果相比,测量误差小于1%,可用于近代物理实验教学.

The principle of the vibrating sample magnetometer is introduced and a vibrating sample magnetometer is made by ourselves using electromagnetic driving method. Using this apparatus, the permanent magnetism of the isotropic permanent Ba ferrite is measured. Compared with the resuits made by a commercial vibrating sample magnetometer, the error is less than 1%, so the apparatus could be used in the teaching of modern physics experiment.