Ferromagnetic Resonance Studies on patterned Trilayer films

This paper investigates the ferromagnetic resonance (FMR) of patterned trilayer films with same aspect ratio and changing element size showing clear evidence of in-plane spin-wave excitation under perpendicular magnetic field. The excited spin waves propagate along the short edge direction and the non-uniform demagnetizing field and magnetization may provide a dynamic pinning mechanism at the sides of the short edge as demonstrated by numerical calculations.