Self-biased optical mode ferromagnetic resonance beyond 22 GHz in artificial exchange coupled trilayers

Aoran Zhou,Yuanzhe Li,Shouheng Zhang,Zhejun Jin,Wenhui Guo,Feng Xu,Xia Wang,Derang Cao,Jie Xu,Guoxia Zhao,Weihua Zong,Shandong Li

Journal of Magnetism and Magnetic Materials（2022）

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摘要

•FeCoB/Ru/FeCoB trilayers prepared by a CGS show strong AFM coupling.•A very strong exchange coupling field as high as 2235 Oe was obtained.•A record optical mode resonance frequency up to 22.68 GHz was achieved.•Resonance mode changing at a low field results in a large fr jump over 16 GHz.

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关键词

Ferromagnetic resonance,Optical mode,Interlayer exchange coupling,Composition gradient sputtering

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