Abstract

The effect of structural properties on the formation of the perpendicular magnetic anisotropy in Co/Dy superlattices has been studied. The superlattices are found to be composition-modulated alloys in which, on the one hand, a rigid periodicity in thicknesses and compositions takes place and, on the other hand, the interdiffusion of Co and Dy at interlayer boundaries leads to a periodic change in the Co and Dy concentrations with depth. The perpendicular magnetic anisotropy in Co/Dy is shown to be due to the perpendicular orientation of the magnetization in CoDy alloy layers, while the magnetization of Co layers is oriented in the sample plane.

中文翻译：

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Co / Dy超晶格的结构和磁性

摘要

研究了Co / Dy超晶格中结构性质对垂直磁各向异性形成的影响。发现超晶格是成分调制的合金，其中一方面发生厚度和成分的刚性周期性变化，另一方面，Co和Dy在层间边界处的相互扩散导致合金的周期性变化。钴和Dy的浓度随深度而变化。Co / Dy中的垂直磁各向异性显示为归因于CoDy合金层中磁化的垂直方向，而Co层的磁化方向位于样品平面中。