It is difficult to fabricate magnetic films containing small nanoparticles with a narrow size distribution. The nanomagnetic structural evolutions inside the nanoparticles in these types of films play a key role in the development of the magnetic properties. Magnetic composite films with a cubic array distribution of the nanoparticles are obtained using the layered growth of FeNi–SiO and SiO by the vacuum thermal evaporation method. The films contain small nanoparticles with a narrow size distribution (4.59 ± 0.18 nm) and an ordered cubic array. In the films, the magnetic induction lines measured by the differential phase contrast microscopy of the transmission electron microscope confirm that the disordered domain becomes multi-domain with an ordered cubic array. Furthermore, the saturation magnetization of such a film is higher than that of a pure FeNi film, despite the presence of the nonmagnetic SiO dielectric. This type of new material can be used in magnetic shields with a weak magnetic field and highly sensitive magnetic sensors.

难以制造包含具有窄尺寸分布的小纳米颗粒的磁性膜。在这些类型的薄膜中，纳米粒子内部的纳米磁性结构演变在磁性的发展中起着关键作用。FeNi-SiO和SiO的层状生长通过真空热蒸发法获得了具有纳米颗粒立方阵列分布的磁性复合膜。薄膜包含尺寸分布窄（4.59±0.18 nm）的小纳米颗粒和有序的立方阵列。在这些膜中，通过透射电子显微镜的微分相差显微镜测量的磁感应线证实，无序畴变为具有有序立方阵列的多畴。此外，尽管存在非磁性SiO电介质，但这种膜的饱和磁化强度高于纯FeNi膜的饱和磁化强度。这种新型材料可用于磁场弱且具有高灵敏度磁传感器的磁屏蔽中。