Magnetic resonance force microscopy of a permalloy microstrip array

The ferromagnetic resonance in an array of permalloy microstrips 3000 $\times$ 500 $\times$ 30 nm in size ordered on a rectangular grid 3.5 $\times$ 6 $\mu$m in size has been investigated by magnetic resonance force microscopy. The dependences of magnetic resonance force microscopy spectra of a sample on the probe–sample distance are analyzed. The possibility of detection of a ferromagnetic resonance spectrum of a single microstrip is demonstrated.