改进的Preisach-DOK模型对钡铁氧体剩磁特性的研究  

Improved Preisach-DOK Modeling on the Remanence Characteristic of A Longitudinal Barium Ferrite

作　　者：赵晶[1] 薛芳[1] 赵国晴[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：《邯郸学院学报》2008年第3期82-85,共4页Journal of Handan University

摘　　要：利用改进的Preisach-DOK模型模拟得到了纵向钡铁硬磁盘及γ-Fe2O3软盘的磁滞回线、剩磁回线、可逆曲线，分析了两种样品的剩磁特性．研究发现钡铁氧体的矫顽力主要由磁晶各向异性决定，大于主要由形状各向异性决定的γ-Fe2O3的矫顾力．同时钡铁氧体具有高的Sr，小的SP75和窄的SFDr，说明其具有较好的剩磁特性．The hysteresis loop, the remanence loop and the reversible curve of a longitudinal barium ferrite hard disk and γ-Fe2O3 flexible disk were simulated by the improved Preisach-DOK model. The study results show that the coercivity of the barium ferrite decided by the magnetocrystalline anisotropy is larger than that of the acicular γ-Fe2O3 determined by the shape anisotropy. The barium ferrite has the superior remanence properties, such as high Sr＊, narrow SFDr and small SP75, illustrating the oriented barium ferrite possess the unusual remanence characteristic.

关 键 词：Preisach-DOK模型 矫顽力 剩磁 

分 类 号：O482.51[理学—固体物理]