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Two Magnon Scattering Contribution to the Ferromagnetic Resonance Linewidth of Pt(Ir)/CoFeTaB/Ir(Pt) Thin Films

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Abstract

The magnetic properties of Pt/CoFeTaB/Ir and Ir/CoFeTaB/Pt trilayer thin films have been studied using angular- and temperature-dependent ferromagnetic resonance. This enables quantitative determination of the various contributions to the magnetic behavior, including separating, the effective Gilbert damping, inhomogeneous damping, and two-magnon-scattering contributions to the magnetic dissipation. As-deposited films show behavior consistent with significant incorporation of Ir into CoFeTaB only when the Ir layer is deposited first. Annealing of the structures at \(300\,^{\circ } \hbox {C}\) causes only minor structural and magnetic modification when Pt is deposited first, and more pronounced changes, attributed to thermally-driven out-diffusion of Ir from CoFeTaB, are found when Ir is deposited first. A holistic consideration of the magnetic resonance behavior can provide detailed information on the atomic-scale structure in magnetic thin-film devices.

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Availability of Data and Materials

The datasets generated during and/or analyzed during the current study are available from the corresponding author upon reasonable request.

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Funding

B. N. is grateful to EPSRC for the provision of a DTP studentship. A. T. H. acknowledges financial support from the Royal Society.

Author information

Authors and Affiliations

  1. Department of Fundamental Sciences, Faculty of Engineering, Alanya Alaaddin Keykubat University, 07450, Antalya, Turkey

    M. Tokaç

  2. Department of Physics, Gebze Technical University, 41400, Kocaeli, Turkey

    S. Kazan, B. Özkal, N. Al-jawfi & B. Rameev

  3. Kazan State Power Engineering University, 420066, Kazan, Tatarstan, Russian Federation

    B. Rameev

  4. Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of Russian Academy of Sciences, 420029, Kazan, Tatarstan, Russian Federation

    B. Rameev

  5. Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK

    B. Nicholson & A. T. Hindmarch

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  1. M. Tokaç
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  4. N. Al-jawfi
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Contributions

BÖ, NA, and BN performed experiments, and MT, SK, BR, and ATH wrote the main manuscript text. All authors reviewed the manuscript.

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Correspondence to S. Kazan.

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Tokaç, M., Kazan, S., Özkal, B. et al. Two Magnon Scattering Contribution to the Ferromagnetic Resonance Linewidth of Pt(Ir)/CoFeTaB/Ir(Pt) Thin Films. Appl Magn Reson 54, 1053–1064 (2023). https://doi.org/10.1007/s00723-023-01601-3

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