T. Mahr et I. Rehberg, PARAMETRICALLY EXCITED SURFACE-WAVES IN MAGNETIC FLUIDS - OBSERVATIONOF DOMAIN-STRUCTURES, Physical review letters, 81(1), 1998, pp. 89-92
Observations of parametrically excited surface waves in a magnetic flu
id are presented. Under the influence of a magnetic field these waves
have a nonmonotonic dispersion relation, which leads to a richer behav
ior than in ordinary liquids. We report observation of three novel eff
ects, namely, (i) domain structures, (ii) oscillating defects, and (ii
i) relaxational phase oscillations.