李艳琴,张宏剑

• 1:大连大学物理科学与技术学院

摘要(Abstract)：

本文将古埃磁天平法测量ε-Fe_3N磁性液体的磁化率和饱和磁化强度增设为物理实验中的设计性、研究性实验项目,通过实验过程中直接感知梯度磁场中ε-Fe_3N磁性液体磁增重的变化,学生能深刻理解磁化率和饱和磁化强度的物理内涵,引领学生进行自主学习。低磁场强度83332kA/m范围内,磁性液体磁化达到饱和,饱和磁化强度Ms为常数。随载液质量增加,3种磁性液体的磁化率和饱和磁化强度逐渐减小。与振动样品磁强计相比,古埃磁天平测试的饱和磁化强度稍偏低,相对误差小于2%,说明古埃磁天平法测量精度较高,适用于测试磁性材料的磁化率和饱和磁化强度。

关键词(KeyWords)： 磁性液体;古埃磁天平;磁化率;饱和磁化强度

Abstract:

Keywords:

基金项目(Foundation): 国家自然基金项目(11605020);; 辽宁省科学技术计划面上项目(2015020585);; 大连大学博士启动项目(20151QL023)

作者(Author): 李艳琴,张宏剑

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