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|Author(s):||Thomas Gerrits; Pavol Krivosik; Michael L. Schneider; C E. Patton; Thomas J. Silva;|
|Title:||Direct Detection of Nonlinear Ferromagnetic Resonance in Thin Films by the Magneto-Optical Kerr Effect|
|Published:||May 16, 2007|
|Abstract:||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.|
|Citation:||Physical Review Letters|
|Pages:||pp. 207602-1 - 207602-4|
|Keywords:||ferromagnetic resonance,instability threshold,Magneto Optical Kerr Effect,Suhl instability|
|PDF version:||Click here to retrieve PDF version of paper (587KB)|