Abstract

Magnetic properties of an interface between cobalt and platinum or tantalum nanolayers have been studied by the optical second-harmonic generation and nonlinear magneto-optical Kerr effect methods. It has been shown that a high sensitivity of the second-harmonic generation method makes it possible to determine the orientation of the easy magnetization axis in the plane of a polycrystalline structure without measurement of the magnetic field dependence of second-harmonic generation. The comparison of the field dependences of magnetic-field-induced second-harmonic generation with the linear magneto-optical effect indicates the difference in the processes of magnetization reversal in Co/Pt and Co/Ta interfaces and the bulk of the cobalt film. In particular, a new linear in magnetization effect has been observed in the second harmonic that is symmetry-forbidden for uniformly magnetized structures.

中文翻译：

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Co / Pt和Co / Ta界面的磁场感应光学二次谐波生成研究

摘要

通过光学二次谐波产生和非线性磁光克尔效应方法研究了钴和铂或钽纳米层之间界面的磁性。已经表明，第二谐波产生方法的高灵敏度使得可以在不测量第二谐波产生的磁场依赖性的情况下确定易磁化轴在多晶结构的平面中的取向。磁场引起的二次谐波产生的场相关性与线性磁光效应的比较表明，Co / Pt和Co / Ta界面的磁化反转过程以及钴膜的体积存在差异。尤其是，