Nucleophilic substitution reaction based layer-by-layer growth of superparamagnetic nanocomposite films with high nonvolatile memory performance

Abstract

Magnetic nanocomposite multilayers including magnetic nanoparticles are prepared using a nucleophilic substitution reaction between 2-bromo-2- methylpropionic acid (-BMPA) and amino (-NH2) groups. The assembly of magnetic nanoparticles in a nonpolar solvent induces densely packed adsorption, which significantly enhances the magnetic and nonvolatile memory properties of nanocomposite films. Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.