Title :
Mode beating of spin wave beams in ferrimagnetic Lu2.04Bi0.96Fe5O12 films
Author :
Buttner, O. ; Bauer, M. ; Mathieu, C. ; Demokritov, S.O. ; Hillebrands, B. ; Kolodin, P.A. ; Kostylev, M.P. ; Sure, S. ; Dotsch, H. ; Grimalsky, V. ; Rapoport, Yu. ; Slavin, A.N.
Author_Institution :
Fachbereich Phys., Kaiserslautern Univ., Germany
fDate :
7/1/1998 12:00:00 AM
Abstract :
We report on measurements of the two-dimensional intensity distribution of linear and non-linear spin wave excitations in a LuBiFeO film. The spin wave intensity was detected using a high-resolution Brillouin light scattering spectroscopy setup. The observed snake-like structure of the spin wave intensity distribution is understood as a mode beating between modes with different lateral spin wave amplitude distributions. The theoretical treatment of the linear regime is performed analytically, whereas the propagation of non-linear spin waves is simulated by a numerical solution of a non-linear Schrodinger equation with suitable boundary conditions
Keywords :
Brillouin spectra; Schrodinger equation; bismuth compounds; garnets; lutetium compounds; magnetic thin films; magneto-optical effects; spin waves; Lu2.04Bi0.96Fe5O12; LuBiFeO film; boundary conditions; ferrimagnetic Lu2.04Bi0.96Fe5O 12 films; high-resolution Brillouin light scattering spectroscopy; linear spin wave excitations; mode beating; nonlinear Schrodinger equation; nonlinear spin wave excitations; numerical solution; snake-like structure; spin wave beams; spin wave intensity; spin wave intensity distribution; two-dimensional intensity distribution; Analytical models; Brillouin scattering; Ferrimagnetic films; Ferrimagnetic materials; Light scattering; Numerical simulation; Optical propagation; Performance analysis; Schrodinger equation; Spectroscopy;
Journal_Title :
Magnetics, IEEE Transactions on
