Effect of the inner structure of domain walls on the stability of an isolated stripe domain in a pulsed field

This paper studies the effect of the inner structure of domain walls on the stability of an isolated stripe domain localized in a thin ferromagnetic f ilm against a pulse of magnetic field applied perpendicularly to the film s urface. It is found that the value of the critical amplitude of the pulsed signal strongly depends on the value of the magnetizing field in which the system was initially placed. It is also established that the difference on stability of domains with unipolar and bipolar walls in pulsed fields dimin ishes as the amplitude of the magnetizing field decreases. Finally, the dep endence of the region of stability in a pulse field on the parameters of th e system is determined for various domain types. (C) 1999 American Institut e of Physics. [S1063-7761(99)01411-0].