Direct detection of nonlinear ferromagnetic resonance in thin films by the magneto-optical Kerr effect

被引：48
|
作者：
Gerrits, Thomas [1 ]
Krivosik, Pavol
Schneider, Michael L.
Patton, Carl E.
Silva, T. J.
机构：
[1] Natl Inst Stand & Technol, Boulder, CO 80305 USA
[2] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA
[3] Slovak Univ Technol Bratislava, Bratislava 81219, Slovakia
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.98.207602
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 degrees. The data provide a profound demonstration of the Suhl threshold effect for parametric spin wave generation for angles above about 14 degrees, the magnetization precession lock-up just above threshold, and the complicated response over the full FMR profile at very high powers.
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页数：4
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