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非晶合金以Fe_(73.5)Cu Nb_3Si_(13.5)B_9为代表,在晶化温度以上退火,可以形成晶粒直径约为10nm的αFe-Si晶相及剩余非晶相组成的一种新型双相复合纳米材料(称为Finemet).这种纳米材料具有极高的初始磁导率(μ_i可达10~5以上),低的矫顽力(H_c可小于0.32A/m)和优良的高频磁性,目前已为许多磁学和材料工作者所注目.对其具有优良软磁性能的解释一般认为有两个:一是退火以后具有很低的磁致伸缩系数,二是由于晶化后αFe-Si晶粒十分细小,有效磁晶各向异性被平均化而减小,Herzer把非晶合金的无规各向异性模型运用于
The amorphous alloy is represented by Fe_ (73.5) Cu Nb_3Si_ (13.5) B_9 and is annealed above the crystallization temperature to form a novel dual phase of αFe-Si crystal phase with a grain size of about 10 nm and the remaining amorphous phase Composite nanomaterials, called Finemet, have very high initial permeability (μ_i up to 10 ~ 5), low coercivity (H_c less than 0.32A / m) and good high frequency Magnetism, which has attracted the attention of many magnetism and material workers at present, is generally believed to have two explanations for its excellent soft magnetic properties: one is that it has a very low magnetostrictive coefficient after annealing, and the other is due to the αFe -Si grains are very small, effective magnetocrystalline anisotropy is averaged and reduced, Herzer amorphous alloy random anisotropic model applied to