SOLITON RELAXATION IN MAGNETS

An equation set describing the evolution of the integrals of motion of solitons, induced by relaxation processes of both a relativistic and exchange nature is obtained within the framework of the phenomenologic al theory. Two-parameter one-dimensional ferromagnetic and antiferroma gnetic solitons and two- and three-dimensional ferromagnetic precessio n solitons are analyzed. The corresponding integral curves are plotted , and the time dependences of the soliton parameters at various relaxa tion stages are discussed.