Observation of locally excited ferromagnetic resonance via magnetic resonance force microscopy

ORAL

Abstract

Magnetic resonance force microscopy spectra of a 50 nm thick permalloy film were measured as a function of the probe-sample distance and the angle between the film plane and the direction of the externally applied magnetic field. At larger angles the multiple resonance modes were observed at small probe-sample distances. Micromagnetic simulations which include the inhomogeneous magnetic field of the probe tip reveal the \textit{localized} nature of the exited resonance modes, opening a way to spatially resolved ferromagnetic resonance measurements in a continuous ferromagnetic media.

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Authors

  • Evgueni Nazaretski

    Los Alamos National Laboratory

  • Denis Pelekhov

    Ohio State University, The Ohio State University, Physics Department, Ohio State University

  • Ivar Martin

    LANL, Los Alamos National Laboratory

  • Peter C. Hammel

    The Ohio State University, Physics Department, Ohio State University

  • Roman Movshovich

    MPA-10, LANL, Los Alamos, NM, USA, Los Alamos National Laboratory