title: Entrainment by a rotating magnetic field of a ferrofluid contained in a sphere.
abstract: Entrainment of a ferrofluid contained in a sphere by a rotating uniform magnetic field is studied on the basis of spin-diffusion theory. The equations for flow velocity and spin velocity, coupled to Maxwell's equations of magnetostatics, are solved analytically to second order in the applied magnetic field. A similar derivation holds in electrohydrodynamics for a polar liquid contained in a sphere and subject to a rotating electrical field.
authors.affiliation: Institut für Theoretische Physik A, RWTH Aachen University, Templergraben 55, D-52056 Aachen, Germany. ufelder@physik.rwth-aachen.de
authors.forename: B U
authors.initials: BU
authors.lastname: Felderhof