Spin wave propagation in ferrimagnetic $G{d}_{x}C{o}_{1-x}$

Abstract

Recent advances in antiferromagnetic spin dynamics using rare-earth (RE) and transition-metal (TM) ferrimagnets have attracted much interest for spintronic devices with a high speed and density. In this study, the spin wave properties in the magnetostatic backward volume mode and surface mode in RE-TM ferrimagnetic $G{d}_{x}C{o}_{1-x}$ films with various composition x are investigated using spin wave spectroscopy. The obtained group velocity and attenuation length are well explained by the ferromagnet-based spin wave theory when the composition of $G{d}_{x}C{o}_{1-x}$ is far from the compensation point.

arXiv comment9 pages, 2 tables, 4 figures

References in corpus (10)

• Antiferromagnetic spintronics
• Antiferromagnetic spintronics
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• Anomalous current-induced spin torques in ferrimagnets near compensation
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• Antiferromagnetic Spin Wave Field-Effect Transistor
• Correlation between Compensation Temperatures of Magnetization and Angular Momentum in GdFeCo Ferrimagnets