Magnetic field-induced biomimetic synthesis of superparamagnetic poly (vinyl alcohol)-maghemite composite

Abstract

Poly (vinyl alcohol)-mediated synthesis of monodisperse, self-assembled, superparamagnetic maghemite particles was carried out through a magnetic field-induced biomimetic route. Modifying the kinetics of precipitation, the magnetic field promoted the nucleation of the maghemite phase over magnetite and also induced a self-assembly-assisted shape anisotropy during the precipitation of the particles in the polymer matrix. © 2004 Materials Research Society.