Electric-Field Control of Strain-Driven Tuning of FMR in the Low-Loss Ferrimagnetic Coordination Compound V[TCNE]<sub>x</sub>

ORAL

Abstract

Electric-field control of magnetic resonance has application potential in the design of low-power, compact, high-frequency magnetoelectronic devices, such as microwave filters and circulators. To date, this work has exploited low-loss ferrite materials mechanically coupled to piezoelectric substrates. However, traditional ferrites typically require lattice-matched substrates and extreme growth conditions to produce high-quality material, making on-chip integration a significant challenge. Here, we demonstrate indirect electric-field control of ferromagnetic resonance (FMR) in devices that integrate the low-loss (α = (3.98±0.22) × 10-5), molecule-based, room-temperature ferrimagnet vanadium tetracyanoethylene (V[TCNE]x~2) with PMN-PT piezoelectric transducers. The ultra-narrow FMR linewidth of V[TCNE]x allows us to demonstrate tuning of more than 6 times the resonant linewidth by applying 13.3 kV/cm across the PMN-PT transducer. A systematic analysis of the Gilbert damping in unstrained and strained V[TCNE]x films shows no change in damping, α. Combined with the demonstrated ability to pattern V[TCNE]x at micron-length scales on a wide variety of substrates, these results herald a new paradigm for on-chip voltage-tuned microwave devices.

**NSF Grant No.: DMR-1808704; DMR-1808742

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Presenters

  • Seth Kurfman

    • Department of Physics, Ohio State Univ - Columbus

Authors

  • Seth Kurfman

    • Department of Physics, Ohio State Univ - Columbus

  • Andrew J Franson

    • Department of Physics, Ohio State Univ - Columbus

  • Piyush Shah

    • Materials and Manufacturing Directorate, Air Force National Laboratory

  • Yueguang Shi

    • Department of Physics, University of Iowa
    • Department of Physics and Astronomy, University of Iowa
    • Department of Physics and Astronomy, The University of Iowa

  • Michael Flatté

    • Department of Physics and Astronomy, The University of Iowa
    • University of Iowa
    • Department of Physics, University of Iowa
    • Physics and Astronomy, Univ of Iowa
    • Department of Physics and Astronomy, University of Iowa, Department of Applied Physics, Eindhoven University of Technology
    • Department of Physics, University of Iowa; Department of Applied Physics, Eindhoven University of Technology
    • Univ. of Iowa/Eindoven University of Technology
    • Department of Physics and Astronomy, University of Iowa
    • Univ of Iowa

  • Gopalan Srinivasan

    • Materials and Manufacturing Directorate, Air Force National Laboratory
    • Oakland University

  • Michael R Page

    • Materials and Manufacturing Directorate, Air Force Research Laboratory
    • Materials and Manufacturing Directorate, Air Force National Laboratory

  • Ezekiel Johnston-Halperin

    • Department of Physics, Ohio State Univ - Columbus
    • Department of Physics, The Ohio State University