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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Pulsed Precessional Motion

Pulsed Precessional Motion

Buess, Matthias

Paperback

Physics

ISBN10: 383250981X
ISBN13: 9783832509811
Publisher: Logos Verlag Berlin
Published: Aug 30 2005
Pages: 111
Weight: 0.35
Height: 0.41 Width: 5.61 Depth: 7.91
Language: English
Pulsed Precessional Motion combines the application of a short rise time magnetic field pulse to tip the magnetization away from equilibrium direction and the measurement of the resulting oscillation in the time domain. Micron sized ferromagnetic permalloy disks exhibiting an in-plane ferromagnetic vortex structure are excited by a perpendicular magnetic field pulse and their modal structure is analyzed. Two types of modes are observed: radially symmetric modes with circular nodes and symmetry breaking modes with diametric nodes. The frequency of the modes with circular nodes increases with the number of nodes. In contrast, the frequency of the modes with diametric nodes decreases with the number of nodes. By a fourier filtering technique the time dependence of individual modes are separated and analyzed. These measurements are the first clear demonstration that mode-mode coupling plays a significant role in magnetization dynamics.

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