DYNAMICS OF DOMAIN-WALLS (SOLITONS) IN FERROMAGNETS IN A MAGNETIC-FIELD PERPENDICULAR TO THE EASY-AXIS

The effect of a strong magnetic field H, perpendicular to the easy axi s of a ferromagnetic, on the motion of a domain wall is investigated. It is shown that the peak velocity of motion v(c) is defined by variou s scenarios at weak (H << H-a) and strong (H-a - H << H-a) magnetic fi elds, where H-a is the anisotropy field. Therefore, the peak velocity V-c is a nonmonotonous function of the magnetic field, when H ranges f rom 0 to H-a. The character of the DW velocity dependence on the drivi ng field H-z was studied.