  A statistical theory of the strip domain structure excited in a bubble film
by an oscillating magnetic field is developed. The theory is based on the
consideration of the strip domain structure as a thermodynamic system
characterized by the spectrum of domain walls oscillation and an effective
temperature that is caused by an oscillating magnetic field and film
nonuniformities. We found the thermodynamic characteristics of that domain
structure and calculated its period as a function of the frequency and
amplitude of an oscillating magnetic field.
