SPIN-WAVE RESONANCE IN THIN METALLIC-FILMS WITH NEGATIVE SURFACE ANISOTROPY

The results of macroscopic complete FMR theory (CT) are briefly introd uced for a metallic thin film with arbitrary value of electrical condu ctivity in normal configuration (NC). The possibility of experimental excitation of anti-larmor resonance modes is commented. It is shown th at the more common insulator theory leads to an inaccurate determinati on of material parameters from experiments on thicker films with high conductivity. The CT formulas are applied for evaluation of SSWR exper iments at NC on thin Si/Fe/Si sandwiches, measured at frequencies arou nd 5, 17 and 25 GKa. Experimental conclusions concerning the complete static saturation of the samples are presented.