改进的Preisach-DOK模型  

Improved Preisach-DOK Model

作　　者：赵国晴[1] 赵晶[1] 

机构地区：[1]邯郸学院物理与电子工程系,河北邯郸056005

出　　处：《河北师范大学学报（自然科学版）》2009年第4期461-464,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金(E2005000178)

摘　　要：Preisach-DOK模型将磁化过程分解为可逆磁化和不可逆磁化2部分.改进的DOK模型中体系的磁化强度是由不可逆磁化强度与可逆磁化强度按照一定的比例叠加而成的,利用体系的各种磁化率模拟磁性材料的磁化过程.通过模拟2个样品的翻转曲线,并与实验结果对比结果表明,对于一种材料,拟合出的一套参数基本上可以反映不同的磁化过程.The Preisach model decomposes the magnetization process into reversible and irreversible parts. In the improved DOK model,it is necessary to model the reversible component separately and add it proportionally to the irreversible component in order to calculate the total magnetization. Many magnetic processes of a magnetic material are simulated by different susceptibility functions. The reversal curves of the two samples were simulated by the improved DOK model. The study results showed that the parameters embodied the varied magnetic processes of the two samples.

关 键 词：PREISACH模型 磁化强度 磁化率 

分 类 号：O482.51[理学—固体物理]