一种新型实用的小型振动样品磁强计的研制

Development of a Novel and Practical Minimized Vibrating Sample Magnetometer

文章介绍了一种新型实用的小型振动样品磁强计 (VSM )。该磁强计主要用来测量软磁或饱和磁化强度较小(<1 0T)磁性材料微量样品 (<10 0mg)的磁滞回线。本磁强计利用高质量扬声器对样品进行激振 ,利用外磁场对振动样品进行磁化 ,同时利用计算机及数据采集卡实时采集相关信号 ,并绘出磁性材料的磁滞回线。使用结果表明 ,在无特殊实验条件要求的情况下 ,实验结果和昂贵的超导磁强计相同。

A novel and practical vibration sample magnetometer (VSM) is introduced. Is is used to measure the magnetization curve of soft magnetic materials. Relevant signals are measured by a data acquisition card when the magnetic samples are vibrated by a high quality speaker and magnetized by an external magnetic field, and the magnetization curve is then obtained. Compared with some precious super conduct magneto-meters, this one gives the same results.