Title :
Inelastic light scattering by a dynamic domain wall
Author :
Demokritov, S.O. ; Kirilyuk, A.I. ; Kreines, N.M. ; Kudinov, V.I. ; Chetkin, M.V. ; Smirnov, V.B.
Author_Institution :
Inst. of Phys. Problems, Acad. of Sci., Moscow, USSR
fDate :
9/1/1989 12:00:00 AM
Abstract :
Inelastic light scattering by a moving domain wall (DW) has been observed by means of Brillouin-Mandel´stam spectroscopy. The weak ferromagnet YFeO3 (TN=645 K) was investigated. The DW velocity as a function of pulsed magnetic field was determined from the scattering spectra. As the DW velocity approaches that of sound, the scattered light intensity increases abruptly due to phonons emitted by the DW. Regions of nonstationary motion are observed wherein the scattering spectra have complicated character
Keywords :
Brillouin spectra; antiferromagnetic properties of substances; lattice phonons; magnetic domain walls; magneto-optical effects; weak ferromagnetism; yttrium compounds; 645 K; Brillouin-Mandel´stam spectroscopy; DW velocity; dynamic domain wall; inelastic light scattering; phonons; pulsed magnetic field; scattered light intensity; scattering spectra; weak ferromagnet YFeO3; Acoustic scattering; Brillouin scattering; Frequency; Light scattering; Magnetic domain walls; Magnetic fields; Optical interferometry; Optical scattering; Phonons; Surface emitting lasers;
Journal_Title :
Magnetics, IEEE Transactions on
