一种新的混合矢量磁滞模型磁滞算子定义方法

A New Definition of the Hysteron in Hybrid Vector Hysteresis Model

提出了一种新的磁滞算子定义方法,从能量角度定性分析了单畴单轴各向异性椭圆形磁性粒子的特性及其磁化方向的判定法则,借助于磁性粒子矢量场等势线分别给出了各向异性和各向同性材料的磁滞算子临界面方程,把磁滞算子定义为等势线包围的封闭区域,给出了磁滞算子的磁化方向判定方法。定义的磁滞算子满足第二热力学定律,具有能够描述磁滞现象的损耗特性和擦除特性,符合描述磁滞特性的Mandelung定则。

A new definition of hysteron is presented in this paper based on classical Preisach and Stoner-Wohlfarth(S-W) hysteresis model. The magnetic properties and the determining rule of magnetization direction of ellipse magnetic particles with single domain and uniaxial anisotropy are analyzed qualitatively via studying the variation of energy density. The critical surface equations of the hysterons of anisotropy and isotropy materials are defined using the equipotential curves of vector field produced by magnetic particles, so that the hysteron is a closed region surrounded by equipotential curves. The determination of magnetization direction of hysteron is discussed at later chapter of the paper. The hysteron defined in this paper is consistent with the second principle of thermodynamics and Mandelung rules, and has loss property and deletion property.