Relaxation in Magnetic Continua
Journal
Journal of Applied Physics
Journal Volume
75
Journal Issue
10
Pages
5794
Date Issued
1994
Author(s)
Abstract
Within a recently developed axiomatic formalism for construction of stochastic field equations of motion a new form of the equation for damped dynamics of magnetization in ferromagnets is proposed. It takes into account spatially inhomogeneous dissipation due to exchange interactions and replaces the customary dissipation constant (due to relativistic effects) by a dissipation operator. This operator is constructed here by comparison of the resultant phenomenological spin wave spectra with results of microscopic calculations. Dynamic description of relaxation of the modulus of magnetization is discussed.
Type
journal article