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VOLUME 48 (1988) | ISSUE 5 | PAGE 267
Inelastic scattering of light by a dynamic domain wall
The inelastic light scattering by a moving domain wall has been detected for the first time by using the method of (Mandelstam-) Brillouin spectroscopy. The scattering spectra show that the velocity of the domain wall depends on the pulsed magnetic field. As the domain-wall velocity approaches the sound velocity, the intensity of the scattered light increases sharply as a result of the emission of phonons by the domain wall. Regions of time-varying motion, in which the scattering spectra are complex in nature, have been detected.