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arXiv · 2504.21118

Power Transfer in Magnetoelectric Resonators: a Combined Analytical and Finite Element Study

Emma Van Meirvenne·Frederic Vanderveken·Daniele Narducci·Bart Sorée·Florin Ciubotaru·Christoph Adelmann
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Abstract

We present an analytical model for power transfer in a magnetoelectric film bulk acoustic resonator (FBAR) comprising a piezoelectric-magnetostrictive bilayer. The model describes the power flow between the elastic and magnetic systems, quantifying the transduction efficiency when the FBAR operates as a magnetic transducer. By applying the model to example systems using piezoelectric ScAlN and magnetostrictive CoFeB, Ni, or Terfenol-D layers, we demonstrate the potential for achieving high efficiencies in magnetoelectric transducers, rendering them ideal for efficient ferromagnetic resonance excitation. The validity of the model's assumptions is confirmed through comparison with a numerical finite element resonator model in COMSOL\texttrademark. The finite element model further enables a comprehensive study of the resonator's dynamic behavior, including transient and steady-state regimes, and the identification of resonant frequencies within the system.

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Emma Van Meirvenne, Frederic Vanderveken, Daniele Narducci, Bart Sorée, Florin Ciubotaru, Christoph Adelmann. 2025-04-29. Power Transfer in Magnetoelectric Resonators: a Combined Analytical and Finite Element Study. https://arxiv.org/abs/2504.21118

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