目前国内外大量使用的软磁合金是FeSi,FeNi和FeCo系晶体材料.为了获得良好的软磁性能,必须严格控制这些材料的成分,选择磁晶各向异性常数K和饱和磁致伸缩系数λs趋于零的成分,通过加工和热处理等手段造成织物,除去杂质,消除应力或产生各向异性等. At present, soft magnetic alloys, which are widely used both at home and abroad, are FeSi, FeNi and FeCo crystal materials.In order to obtain good soft magnetic properties, the compositions of these materials must be strictly controlled, the magnetocrystalline anisotropy constant K and the saturation magnetostriction coefficient λs Tending to zero components, through the processing and heat treatment means such as fabric, remove impurities, eliminate stress or produce anisotropy.