  The kineticts of magnetization reversal of stripe-shaped permalloy-niobium
hybrid nanofilms is studied in 6-300 K temperature range by means of
magneto-optics visualization technique. The niobium influence on magnetic
domain walls type and on magnetic domain structure of permalloy via the
interface quality and via the distortion of stray fields is found. The memory
effect, which is the superconducting niobium memory about an initial magnetic
domain structure of permalloy at cooling below T_c, is found. The memory is
razed only by hybrid heating over T_c.
