Thickness dependence of spin torque ferromagnetic resonance in Co 75Fe25/Pt bilayer films

A. Ganguly, K. Kondou, H. Sukegawa, S. Mitani, S. Kasai, Y. Niimi, Y. Otani, A. Barman

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    80 Scopus citations

    Abstract

    The spin Hall angle of Pt in Co75Fe25/Pt bilayer films was experimentally investigated by means of the spin-torque ferromagnetic resonance and the modulation of damping measurements. By comparing the present results with the Ni80Fe20/Pt system, we found that the ferromagnetic layer underneath the Pt one greatly affects the estimation of the spin Hall angle. We also discuss the spin diffusion length of Pt and the ferromagnetic thickness dependence of the Gilbert damping coefficient.

    Original languageBritish English
    Article number072405
    JournalApplied Physics Letters
    Volume104
    Issue number7
    DOIs
    StatePublished - 17 Feb 2014

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