磁粘滞行为对永磁材料磁性参数测量结果的影响研究  

Effects of magnetic viscosity on measurement results of magnetic properties for permanent magnetic material

作　　者：吴琼[1] 王子生[1] 张朋越[1] 葛洪良[1] 泮敏翔[1] 雷国莉[1] 

机构地区：[1]中国计量学院国家磁性材料及其制品质量监督检验中心(浙江),杭州310018

出　　处：《功能材料》2015年第20期20088-20091,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51301158);国家质检公益性行业科研专项资助项目(201210107)

摘　　要：讨论了磁粘滞行为对永磁材料磁参数测量结果的影响,并具体分析了不同磁场强度和温度下磁粘滞系数的变化情况,结果表明,内禀矫顽力数值随磁场变化率增大而增加。磁粘滞系数与作用磁场的关系曲线呈抛物线形,且峰值出现在内禀矫顽力数值附近。随着温度的升高,磁粘滞系数的增大,样品的磁粘滞效应增强,磁场变化速率对内禀矫顽力测量结果影响增大。The effects of magnetic viscosity on measurement results of magnetic properties for permanent magnetic material are investigated,and the variation of magnetic viscosity coefficient with time and temperature was discussed at detail.It was turned out that the value of intrinsic coercivity increases with the magnetic field change rate.The relation curve between the magnetic viscosity coefficient and the applied magnetic field presents the parabola shape,and the peak was located in the magnetic field corresponding to intrinsic coercivity.The magnetic viscosity coefficient increases with temperature,enhanced magnetic viscosity effect was observed.

关 键 词：磁场变化速率 磁粘滞系数 内禀矫顽力 

分 类 号：TB99[一般工业技术—计量学]