TRANSFORMATION OF SPIN-WAVE RESONANCE-SPECTRA IN MULTILAYER FILMS UPON PASSAGE THROUGH THE CURIE-POINT OF THE LOCKING LAYER

A technique has been developed for controlling ?he degree of spin lock ing in two-and three-layer ferrite-garnet films. Variation of the degr ee of locking is achieved by varying the temperature and by passing on e of the layers of the film through its Curie point. A fundamental dif ference in the nature of the transformation of the spin-wave resonance spectra taking place near the Curie point of ?he lacking layer in fil ms with initially symmetric and asymmetric boundary conditions is iden tified, (C) 1997 American Institute of Physics.