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Classics in Magnetics A Phenomenological Theory of Damping in Ferromagnetic Materials

IEEE Transactions on Magnetics · 2004 · Vol. 40(6) · pp. 3443–3449

T. L. Gilbert✉(Under Armour (United States))

Abstract

In 1955, a phenomenological theory of ferromagnetism was well established and had been corroborated by a considerable amount of experimental data. However, there were problems in the phenomenological theory of the dynamics of the magnetization field. The Landau-Lifshitz equation for damping of the motion of the magnetization field could not account for the large noneddy-current damping in thin Permalloy sheets. The problem undertaken herein is a reformulation of the theory in a way that is more consistent with the theory of damping in other physical systems in order to be able to take large damping into account.

Magnetic Properties and Applications Geomagnetism and Paleomagnetism Studies Magnetic properties of thin filmsMagnetizationMagnetization dynamicsPermalloyFerromagnetismCondensed matter physicsPhenomenological modelMagnetic dampingPhysicsField (mathematics)Field theory (psychology)

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