Ordered two-dimensional arrays of ferrite nanoparticles

Uniform 2D arrays of organically passivated magnetite (Fe3O4) and cobalt fe rrite (CoFe2O4) have been prepared by the Langnmir-Blodgett technique. Prel iminary studies of the magnetization curves show small changes in the shape of the curves depending on the number of deposited layers. Control over th e formation of the colloidal solutions and of the 2D arrays, combined with the possibility to tune the physical properties of these arrays, may lead t o new information storage media as well as novel magnetoresistive materials .