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Magnetic field driven magnetic domains and ferromagnetic resonances in multilayer thin films Ta/FeGaB/Ta for microwave application

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Abstract

The multilayer of FeGaB thin films is characterized for microwave, magnonics, spin caloritronics, and spintronics applications. The sputtered FeGaB thin films demonstrate that the coercive field increase with the thickness of the FeGaB thin film. The magnetic domain widths decrease as the FeGaB thin film thickness increases. The detraction of the domains width attributes to spin–orbit coupling (SOC) and magnetic dipolar fields. The manipulation of the critical domain is a key parameter for estimating the domain wall energy; in multilayers, the critical domain width is 48 nm. The dynamic characteristics (Ferromagnetic resonances) of a thin film stack Ta/FeGaB/Ta multilayer provide the inhomogeneous linewidth (H0) and damping factor (α). Based on the thickness dependent damping factor calculate the spin-mixing conductance. Magnetic domain wall mobility is investigated with help of damping factor and domain wall width.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology, Warangal, Telangana, India

    K. Yadagiri

  2. School of Information Science and Technology, ShanghaiTech University, Shanghai, China

    Y. Wang & T. Wu

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  1. K. Yadagiri
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  2. Y. Wang
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KY contributed to investigation, data curation, formal analysis, methodology, visualization, and writing original manuscript. WY contributed to investigation, data curation, visualization, and writing review. TW contributed to supervision and validation.

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Correspondence to K. Yadagiri.

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Yadagiri, K., Wang, Y. & Wu, T. Magnetic field driven magnetic domains and ferromagnetic resonances in multilayer thin films Ta/FeGaB/Ta for microwave application. J Mater Sci 58, 11327–11338 (2023). https://doi.org/10.1007/s10853-023-08713-y

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