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portada Pulsed Precessional Motion
Type
Physical Book
Year
2005
Language
English
Pages
111
Format
Paperback
ISBN13
9783832509811

Pulsed Precessional Motion

Buess, Matthias (Author) · Logos Verlag Berlin · Paperback

Pulsed Precessional Motion - Buess, Matthias

New Book Imported to Taiwan
Delivery: 17 Nov - 26 Nov Shipping: 13 to 15 business days.
NT$ 3,463
NT$ 3,463

Synopsis "Pulsed Precessional Motion"

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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