Figure 3

(a) Field-swept \(\upmu\)FMR spectra measured for \(\phi _H\) = 180\(^{\circ }\) on the edge-trimmed strip (top green curve), and cut with 50 nm (middle yellow curve) and 100 nm gaps (bottom red curve), respectively. (b) Corresponding simulated FMR spectra of an infinitely long strip with 1 \(\upmu\)m \(\times\) 50 nm cross section, two strips with 475 nm \(\times\) 50 nm cross section separated by 50 nm, and two strips with 450 nm \(\times\) 50 nm cross section separated by 100 nm gap, respectively. The spectra in (a) and (b) show the field-derivative of the dispersion signal \(d\chi ^\prime /dH\) and are vertically offset for visual clarity. Numbers in (a) and (b) denote the mode order (see text). (c–e) x-components of the mode profiles of the single strip (c) and HIM-cut strips (d, e) for the bias field values corresponding to the resonances observed in b). The linescans are vertically offset for better visualization.