  We have investigated dynamic behaviors of the magnetic domain wall under
perpendicular magnetic field pulses in ferromagnetic nanowires using
micromagnetic simulations. It has been found that the perpendicular magnetic
field pulse can trigger the magnetic domain wall motion, where all the field
torques are kept to be on the plane of nanowire strip. The magnetic domain wall
speed faster than several hundreds meters per second is predicted without the
Walker breakdown for the perpendicular magnetic driving field stronger than
$200~\mathrm{mT}$. Interestingly, the dynamic behavior of the moving magnetic
domain wall driven by perpendicular magnetic field pulses is explained by
charging- and discharging-like behaviors of an electrical RC-circuit model,
where the charging and the discharging of "magnetic charges" on the nanowire
planes are considered. The concept of the RC-model-like dynamic characteristic
of the magnetic domain wall might be promising for spintronic functional device
applications based on the magnetic domain wall motion.
