| Author(s): |
Thomas Gerrits; Pavol Krivosik; Michael 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 |
| Volume: |
98 |
| Issue: |
207602 |
| Pages: |
pp. 207602-1 - 207602-4 |
| Keywords: |
ferromagnetic resonance;instability threshold;Magneto Optical Kerr Effect;Suhl instability |
| Research Areas: |
Electromagnetics |
| PDF version: |
 Click here to retrieve PDF version of paper (573KB) |
