Domain-wall dynamics in multisegmented Ni/Co nanowires

The current-induced motion of transverse magnetic domain walls (DWs) in a multisegmented Co/Ni nanowire is investigated numerically. We find that the phase diagram current pulse length magnitude presents rare diversity behaviors depending on segment's and material parameters. show by changing only shape, range parameters we obtain controlled DW with or without polarity change. change arises simplest case from birth propagation an antivortex along width nanowire. can be displaced over long distances characteristics boundary conditions. systematic flip found to stable at room temperature. Moreover, modifying through alloying, engineered, decreasing depinning paving way for storage logic applications.