Direct Detection of Nonlinear Ferromagnetic Resonance in Thin Films by the Magneto-Optical Kerr Effect
Thomas Gerrits, Pavol Krivosik, Michael Schneider, C E. Patton, Thomas J. Silva
The longitudinal magneto-optical Kerr effect is used to obtain a calibrated measure of the dynamic magnetization response over the ferromagnetic resonance (FMR) profile for in-plane magnetized Permalloy films excited with high power in-plane transverse microwave fields at 1.25 to 3.75 GHz and in-plane precession angles up to about 20°. The data provide a profound demonstration of the Suhl threshold effect for parametric spin wave generation for angles above about 14°, the magnetization precession lock-up just above threshold, and the complicated response over the full FMR profile at very high powers.
, Krivosik, P.
, Schneider, M.
, Patton, C.
and Silva, T.
Direct Detection of Nonlinear Ferromagnetic Resonance in Thin Films by the Magneto-Optical Kerr Effect, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32538
(Accessed November 30, 2023)