CONFIGURATION EFFECTS OF THE EXISTENCE CONDITIONS FOR INTERFACE BILAYER SPIN-WAVES

We consider the existence regions of interface spin waves in a ferroma gnetic bilayer film on the two-dimensional Brillouin zone as to their size and shape versus the respective interface-related parameters (int erface exchange coupling and intrinsic interface anisotropy), applying the approximation of very thick bilayer film and the method of Brillo uin zone mapping (BZM). We put especial emphasis on the effect exerted on the BZM by varying (in the plane perpendicular to the film) the co nfiguration angle of the film magnetization with respect to the film n ormal.