Ferroelectric control of magnetic domains in ultra-thin cobalt layers
Résumé
Non-volatile ferroelectric control of magnetic domains has been demonstrated in ultra-thin cobalt
layers at room temperature. The sensitivity of magnetic anisotropy energy to the electronic structure
in a few atomic layers adjacent to the interface allows for ferroelectric control of coercivity and
magnetic domain dynamics. These effects have been monitored and quantified using magnetooptical
Kerr effect. In particular, the regimes, where the ferroelectric domains enhance/inhibit the
magnetic domain nucleation or increase/reduce domain wall velocity, have been explored. Thus,
non-destructive and reversible ferroelectric domain writing provides a tool to define the magnetic
domain paths, create nucleation sites, or control domain movement.
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