Abstract
Magneto-electro-elastic and multiferroic materials can be combined in appealing nanostructures characterized by the coexistence and coupling of electric, magnetic, and mechanical phases with potential applications in novel multifunctional devices. Here, we derive a theory for nonvolatile room-temperature memory elements composed of magnetostrictive nanoparticles embedded in a piezoelectric matrix: two stable orthogonal magnetization states are obtained by the competition of anisotropy and external magnetic polarization. The innovative nontoggle switching between the states is modeled by a thorough combination of the nanomechanical Eshelby approach with the nanomagnetic Landau-Lifshitz-Gilbert formalism, yielding a robust picture of the dynamical behavior and allowing the improvement of the energetic efficiency.
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