Magnetic Anisotropy and Its Structural Origins in Ru-Substituted Manganite Films

Abstract

Controlling magnetic anisotropy (MA) is important in a variety of applications including magnetic memories, spintronic sensors, and skyrmion-based data distribution. The perovskite manganite family provides a fertile playground for complex, intricate, and potentially useful structure-magnetism relations. Here we report on the MA that emerges in 10% Ru substituted $L{a}_{0.7}S{r}_{0.3}Mn{O}_3$ (Ru-LSMO) films for which strong perpendicular magnetization and anisotropic in-plane magnetization are found. These moderately compressively strained films possess a rich microstructure, consisting of coherently strained phase which evolves into a one dimensional (1D) periodically-modulated structure above a critical thickness. We illustrate how 10% Ru substitution plays a crucial role behind the observed MA, and how the structural distortion and 1D periodic structural modulation produce the anisotropic in-plane magnetization. We highlight the practical significance of the observed MA, which could pave the way towards the realization of cutting-edge oxide-based room temperature spintronic memory devices.

arXiv comment3 manuscript figures and 8 supplement figures

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Cited by in corpus (1)

• Atomic Origins of Magnetic Anisotropy in Ru-substituted Manganite Films