振动样品磁强计的磁性表征测量  

How to Measure the Magnetic Characteristics with Vibrating Sample Magnetometer

作　　者：隋文波[1] 张昕 杨德政 

机构地区：[1]兰州大学磁学与磁性材料教育部重点实验室,甘肃兰州730000 [2]西安市第一中学,陕西西安710082

出　　处：《实验科学与技术》2018年第1期22-25,共4页Experiment Science and Technology

基　　金：国家自然科学基金(50902064);国家杰出青年科学基金(50925103);中央高校项目(批准号309027);甘肃省科技计划资助(17YF1GA024)

摘　　要：基于振动样品磁强计的磁滞回线测试功能,以Co Zr薄膜、Fe_3O_4粉末和SrFe_(11.6)O_(19)粉末的样品为例,测试了磁滞回线。在准确调整样品鞍点的前提下,待测样品分别进行了通过制定粗测程序测试粗测磁滞回线,以及细测程序和相关磁滞回线。通过对比和分析所得的实验结果,展示了两种测试程序在实际测试中的作用及结果差异,粗测磁滞回线可以快速地提供样品大概的矫顽力、剩余磁化强度及饱和场等基本磁参量的取值范围,而细测磁滞回线提供了磁性材料的准确合理的矫顽力、剩余磁化强度及饱和场等基本磁参量。Based on the hysteresis loop test function of the vibrating sample magnetometer, three types of samples （ i. e. CoZr thin film, Fe 3 0 4 powder and SrFe 11 6 019 powder） are measured to obtain the hysteresis loop. After adjusting the saddle point of the sam- ple as the prerequisite conditions of accurate measurments, the simplified procedure and the accurate procedure are performed to obtain resulting hysteresis loops. By comparing and analyzing the experimental results, we find that the two procedures based on the resulting hysteresis loops are differnet in actual tests ： the hysteresis loop for the simplified procedure can quickly provide the scope of the basic magnetic parameters such as coercive force, remnant magnetization and saturation field, and the hysteresis loop for accurate procedure can provide an accurate reasonable value of magnetic material （coercive force, remnant magnetization, and the saturation field）.

关 键 词：磁性材料 磁滞回线 剩余磁化强度 矫顽力 

分 类 号：TM936.32[电气工程—电力电子与电力传动]