纳米晶材料发展趋势非晶金属磁性材料主要包括铁基和钴基两大类，前者具有很高的饱和磁通密度（ＢＳ），但有磁致伸缩不易减小到零和很难得到很大磁导率（μ）等缺点；然而后者则具有很大的卜，但ＢＳ却较小。纳米晶合金则综合了铁基与钻基非晶合金两者的优点，因为纳米晶... The development trend of nanocrystalline materials Amorphous metallic magnetic materials include two major categories of iron-based and cobalt-based, the former has a high saturation flux density (BS), but the magnetostriction can not easily be reduced to zero and difficult to get very large Permeability (μ) and other shortcomings; however, the latter has a great Bu, but BS is smaller. Nanocrystalline alloy is a combination of the advantages of both iron-based and diamond-based amorphous alloys, because nanocrystalline ...