Fig. 4: Ferromagnetic resonance spectra under the converse magneto-photostrictive effect.

a In-plane field-sweep ferromagnetic resonance (FMR) spectra for the 5 nm (black circles) and 10 nm (black line) thick samples measured at 9.3 GHz along φ = 0^∘, in the dark state. b In-plane field-sweep FMR spectra for both samples measured at 9.3 GHz under the converse magneto-photostrictive effect (CMPE) induced by the light emitting diode illumination (blue filled-in circles for the 5 nm sample, blue dashed lines for the 10 nm sample) and in the dark state (black circles for the 5 nm sample, black lines for the 10 nm sample), along φ = 0^∘ and along φ = 75^∘. φ is the angle between the applied magnetic field H and the [100] direction of the substrate.