Magnetophoresis of Microparticles in a Magnetic Fluid

An experimental setup is developed for studying magnetophoresis in a layer of a magnetic fluid several millimeters thick by the method of light transmission and reflection. The region of the sign-alternating magnetic field of a ring magnet is used in the experiment. The clarification of the central portion of the magnetic fluid layer, observed for several days, is interpreted by the fact that the particle concentration is redistributed due to the processes of magnetophoresis of microparticles and diffusion of nanoparticles in an inhomogeneous magnetic field.