Irreversible thermodynamics of non-uniform insulating ferromagnets

abstract

• Two types of damping are commonly applied to describe ferromagnets at the phenomenological level: one by Landau and Lifshitz, and the other by Gilbert. This work successively applies the methods of irreversible thermodynamics to insulators, insulating paramagnets, and uniform insulating ferromagnets, in the last case uniquely obtaining Landau-Lifshitz damping. These methods are then applied to non-uniform insulating ferromagnets, for which new, non-current-related, spin fluxes and spin torques appear. These may be relevant to the dynamics of magnets in confined geometries, where boundary conditions impose complex non-trivial textures. Study of systems with very large damping might help distinguish between the two proposed forms of damping. 2008 Elsevier B.V. All rights reserved.

authors

• Saslow, Wayne

published proceedings

• JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

author list (cited authors)

• Saslow, W. M., & Rivkin, K.

citation count

• 6

complete list of authors

• Saslow, Wayne M||Rivkin, Kirill

publication date

• November 2008

publisher

• Elsevier  Publisher

published in

• Journal of Magnetism and Magnetic Materials  Journal

keywords

• Gilbert Damping
• Landau-lifshitz Damping
• Non-uniform Insulating Ferromagnet

Digital Object Identifier (DOI)

• 10.1016/j.jmmm.2008.05.027

start page

• 2622

end page

• 2628

volume

• 320

issue

• 21

URL

• http://dx.doi.org/10.1016/j.jmmm.2008.05.027