Application of the Diffusion-Modified Bloch Equation to Electron Spin Resonance in Ordinary and Ferromagnetic Metals

Abstract

A new solution to the electron spin resonance absorption in metals is given by using Bloch's equation modified to include diffusion. It is shown that the coefficient for a similar diffusion term added to the Landau-Lifshitz equation for ferromagnetic resonance must be of order ${10}^{\ensuremath{-}5}$ times smaller than that for nonmagnetic metals. A restricted formula for saturation in nonmagnetic metals is given.