Electric-field-driven dynamics of magnetic domain walls in magnetic nanowires patterned on ferroelectric domains

dc.contributorAalto Universityen
dc.contributor.authorVan De Wiele, Ben
dc.contributor.authorLeliaert, Jonathan
dc.contributor.authorFranke, Kévin J A
dc.contributor.authorVan Dijken, Sebastiaan
dc.contributor.departmentGhent University
dc.contributor.departmentDepartment of Applied Physics
dc.description| openaire: EC/H2020/665215/EU//EMOTION | openaire: EC/FP7/307502/EU//E-CONTROL
dc.description.abstractStrong coupling of magnetic domain walls onto straight ferroelastic boundaries of a ferroelectric layer enables full and reversible electric-field control of magnetic domain wall motion. In this paper, the dynamics of this new driving mechanism is analyzed using micromagnetic simulations. We show that transverse domain walls with a near-180° spin structure are stabilized in magnetic nanowires and that electric fields can move these walls with high velocities. Above a critical velocity, which depends on material parameters, nanowire geometry and the direction of domain wall motion, the magnetic domain walls depin abruptly from the ferroelastic boundaries. Depinning evolves either smoothly or via the emission and annihilation of a vortex or antivortex core (Walker breakdown). In both cases, the magnetic domain wall slows down after depinning in an oscillatory fashion and eventually comes to a halt. The simulations provide design rules for hybrid ferromagnetic-ferroelectric domain-wall-based devices and indicatethat material disorder and structural imperfections only influence Walker-breakdown-like depinning at high domain wall velocities.en
dc.description.versionPeer revieweden
dc.identifier.citationVan De Wiele , B , Leliaert , J , Franke , K J A & Van Dijken , S 2016 , ' Electric-field-driven dynamics of magnetic domain walls in magnetic nanowires patterned on ferroelectric domains ' , New Journal of Physics , vol. 18 , no. 3 , 033027 , pp. 1-7 . https://doi.org/10.1088/1367-2630/18/3/033027en
dc.identifier.otherPURE UUID: 9d800643-c31c-4199-9f96-1792f6e83f87
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/9d800643-c31c-4199-9f96-1792f6e83f87
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dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/4321420/pdf.pdf
dc.relation.ispartofseriesNEW JOURNAL OF PHYSICSen
dc.relation.ispartofseriesVolume 18, issue 3en
dc.subject.keywordelectric field
dc.subject.keywordferroelectric-ferromagnetic heterostructures
dc.subject.keywordmagnetic domain wall motion
dc.subject.keywordmagnetic domain wall pinning
dc.titleElectric-field-driven dynamics of magnetic domain walls in magnetic nanowires patterned on ferroelectric domainsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi