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通过建立具有平面近横向各向异性场的非晶态合金薄带及膜的磁畴结构模型,利用线性化Maxwell方程组及Landau-Lifshitz方程,推出了在高频交变磁场及外加面内轴向直流磁场Hex作用下的铁磁材料的与取向相关的磁导率表达式,得到了对方位角平均的相对磁导率及阻抗的计算式,导出了磁导率与张量磁化率分量间的关系,对材料磁导率的实部及虚部随Hex的变化进行了计算,并给出了对应的磁谱图.建立的磁导率与外磁场的理论关系可将Panina及Kraus给出的理论结果统一起来.得出了在低场范围与实验结果相当符合的磁电阻抗效应理论.
By establishing the magnetic domain structure model of amorphous alloy ribbon with planar near-transverse anisotropy field and using the linearized Maxwell’s equations and Landau-Lifshitz equation, According to the orientation-dependent permeability of the ferromagnetic material under the action of the direct current magnetic field Hex, the formulas of the relative permeability and the impedance of the azimuthal average are obtained, and the relationship between the permeability and the tensor susceptibility component , The real and imaginary parts of the permeability of the material are calculated with the change of Hex and the corresponding magnetic spectra are given.The theoretical relationship between the permeability and the external magnetic field can be given by Panina and Kraus The theoretical results are unified, and the magneto-impedance effect theory which is in good agreement with the experimental results in the low field is obtained.