Abstract
The phenomenological Gilbert-Landau-Lifshitz theory of magnetic damping in ordered magnetic materials has long served as the central model employed in the analysis of considerable experimental magnetic resonance data. The problem undertaken here is to formulate the microscopic basis of the model in terms of usual theory of irreversible transport embodied in the fluctuation-dissipation-response theorems. As an application of the general method we establish a rigorous relationship between magnetic damping and acoustic damping implicit in magnetoelastic models.
Keywords
Gilbert-Landau-Lifshitz theory, magnetic damping, acoustic damping, fluctuation dissipation theorem, magnetoelastic models
Subject Categories
Magnetic resonance, Magnetic materials
Disciplines
Electromagnetics and photonics
Publisher
American Institute of Physics
Publication Date
10-1-2010
Rights Information
Copyright 2010 American Institute of Physics.
Rights Holder
American Institute of Physics
Permanent URL
Recommended Citation
Widom, A.; Vittoria, C.; and Yoon, S. D., "Gilbert ferromagnetic damping theory and the fluctuation-dissipation theorem" (2010). Electrical and Computer Engineering Faculty Publications. Paper 56. http://hdl.handle.net/2047/d20002227
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Notes
Originally published in Journal of Applied Physics 108, 073924 (2010). DOI:10.1063/1.3330646 (http://dx.doi.org/10.1063/1.3330646).