Effects of strain on the dynamic magnetic properties of europium iron garnet

ORAL

Abstract

Ferrimagnetic insulators (FMI) have attracted the interest of the spintronic community as a source of pure spin currents and as a medium for long-range magnon spin transport. Among FMI, rare earth iron garnet (REIG) have a plethora of attributes desirable for practical applications. Epitaxial growth of REIG thin films offers an opportunity to control the magnetic properties; in the case of europium iron garnet (EuIG), the role of Eu for tuning magnetic properties remains elusive. In this work, we present an experimental study on the effect of strain in EuIG thin films on the dynamic magnetic properties. EuIG films of varying thickness (10-100 nm) were grown on various (111) garnet substrates by pulsed laser deposition. The strain was controlled by film thickness and substrate used, as characterized by X-ray diffraction. We performed angular and frequency dependent ferromagnetic resonance measurements on the samples and found a systematic increase in the values of Gilbert damping α and inhomogeneous linewidth ΔHo and the appearance of higher order anisotropies when a large strain is exerted in the films.

*This work is supported as part of SHINES, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under Award SC0012670.

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Presenters

  • Victor Ortiz

    • Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA
    • Physics and Astronomy, University of California, Riverside
    • University of California, Riverside
    • Physics and Astronomy, UC riverside

Authors

  • Victor Ortiz

    • Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA
    • Physics and Astronomy, University of California, Riverside
    • University of California, Riverside
    • Physics and Astronomy, UC riverside

  • Bassim Arkook

    • Physics and Astronomy, University of California, Riverside

  • Junxue Li

    • University of California, Riverside
    • Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA
    • Physics and Astronomy, University of California, Riverside
    • Department of Physics and Astronomy, University of California, Riverside
    • Physics and Astronomy, UC riverside

  • Wei Yuan

    • International Center for Quantum Materials, School of Physics , Peking University, Beijing
    • Physics and Astronomy, University of California, Riverside
    • University of California, Riverside
    • Physics and Astronomy, UC riverside

  • Tang Su

    • Physics and Astronomy, University of California, Riverside
    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics, Peking University
    • School of Physics, Peking University

  • Igor Barsukov

    • Physics and Astronomy, University of California, Riverside

  • Jing Shi

    • University of California, Riverside
    • Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA
    • Physics, UCR
    • Physics and Astronomy, University of California, Riverside
    • Physics and Astronomy, UC riverside