磁化强度的磁感应强度依赖函数在Halbach型永磁体阵列研究中的应用  

Applications of the magnetic induction strength dependent magnetization function in the study of Halbach type permanent magnet array

作　　者：徐小农[1] 卢定伟[1] 王智河 陈年林 王坤明 Xu Xiaonong;Lu Dingwei;Wang Zhihe;Chen Nianlin;Wang Kunming(Physics College of Nanjing University,National Laboratory of Solid State Microstructures,Nanjing 210093;Nanjing Tengchi Electronics Corporation Limited,Nanjing 211151)

机构地区：[1]南京大学物理学院固体微结构实验室,南京210093 [2]南京腾驰电子有限公司,南京211151

出　　处：《电气技术》2018年第11期15-21,共7页Electrical Engineering

基　　金：国家自然科学基金(50577030)

摘　　要：在Halbach型永磁体阵列磁场和磁化强度分布研究中,涉及永磁材料内部磁化强度(M)、磁场强度(H)和磁感应强度(B)三者的相互关系函数M(H)、M(B)和B(H)。本文介绍了这些函数的典型实验特征,说明为计算获得永磁体阵列磁体内部自洽的磁场和磁化强度矢量分布,必须使用M(B)函数。强场永磁体阵列材料内部的磁场和磁化强度矢量分布无法直接被进行实验测量,不恰当地使用M(H)和B(H)函数易导致不符合实际情况的磁场和磁化强度分布状态预测。In the study of magnetic field and magnetization distribution generated by Halbach permanent magnet array,the relationship functions M(H),M(B)and B(H)among magnetization(M),magnetic field strength(H)and magnetic induction(B)are involved.Here the experimental characteristics of these functions are introduced,and it is illustrated that M(B)function should be used in the calculation for obtaining the self consistent magnetization and field distributions inside the permanent magnet array.At the material interior of permanent magnet array,the sophisticated vectorial distributions of field and magnetization may not be experimentally measured,inappropriate use of M(H)and B(H)functions possibly results in the untrue predication of magnetic field and magnetization distributions under the intense self field.

关 键 词：Halbach型永磁体阵列 磁感应强度 磁化强度与磁场自洽分布 

分 类 号：TM273[一般工业技术—材料科学与工程]