Voltage-driven displacement of magnetic vortex cores
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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6
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Journal of Physics D: Applied Physics, Volume 53, issue 43
Abstract
Magnetic vortex cores in polycrystalline Ni discs underwent non-volatile displacements due to voltage-driven ferroelectric domain switching in single-crystal BaTiO3. This behaviour was observed using photoemission electron microscopy to image both the ferromagnetism and ferroelectricity, while varying in-plane sample orientation. The resulting vector maps of disc magnetization match well with micromagnetic simulations, which show that the vortex core is translated by the transit of a ferroelectric domain wall, and thus the inhomogeneous strain with which it is associated. The non-volatility is attributed to pinning inside the discs. Voltage-driven displacement of magnetic vortex cores is novel, and opens the way for studying voltage-driven vortex dynamics.Description
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Ghidini , M , Pellicelli , R , Mansell , R , Pesquera , D , Nair , B , Moya , X , Farokhipoor , S , Maccherozzi , F , Barnes , C H W , Cowburn , R P , Dhesi , S S & Mathur , N D 2020 , ' Voltage-driven displacement of magnetic vortex cores ' , Journal of Physics D: Applied Physics , vol. 53 , no. 43 , 434003 . https://doi.org/10.1088/1361-6463/aba01d