Electric-Field Control of Propagating Spin Waves by Ferroelectric Domain-Wall Motion in a Multiferroic Heterostructure
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-07-08
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en
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9
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Advanced Materials, Volume 33, issue 27
Abstract
Magnetoelectric coupling in multiferroic heterostructures offers a promising platform for electric-field control of magnonic devices based on low-power spin-wave transport. Here, electric-field manipulation of the amplitude and phase of propagating spin waves in a ferromagnetic Fe film on top of a ferroelectric BaTiO3 substrate is demonstrated experimentally. Electric-field effects in this composite material system are mediated by strain coupling between alternating ferroelectric stripe domains with in-plane and perpendicular polarization and fully correlated magnetic anisotropy domains with differing spin-wave transport properties. The propagation of spin waves across the strain-induced magnetic anisotropy domains of the Fe film is directly imaged and it is shown how reversible electric-field-driven motion of ferroelectric domain walls and pinned anisotropy boundaries turns the spin-wave signal on and off. Furthermore, linear electric-field tuning of the spin-wave phase by altering the width of strain-coupled stripe domains is demonstrated. The results provide a new route toward energy-efficient reconfigurable magnonics.Description
Keywords
domain‐, wall motion, electic‐, field control of magnetism, magnetoelectric coupling, multiferroic heterostructures, reconfigurable magnonics, spin waves, MAGNETISM, RESONANCE, FILMS
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Qin, H, Dreyer, R, Woltersdorf, G, Taniyama, T & van Dijken, S 2021, ' Electric-Field Control of Propagating Spin Waves by Ferroelectric Domain-Wall Motion in a Multiferroic Heterostructure ', Advanced Materials, vol. 33, no. 27, 2100646 . https://doi.org/10.1002/adma.202100646