title: Synthesis and characterization of monodisperse ultra-thin silica-coated magnetic nanoparticles.
abstract: A systematic study of the formation of silica-coated magnetite particles via a modified reverse microemulsion approach was investigated by using transmission electron microscopy (TEM), x-ray diffraction (XRD) and a superconducting quantum interference device (SQUID). The results show that the surfactant Igepal CO-520 played an important role in the reaction system, and the thickness of the silica shell could be controlled by the concentration of the reaction agents. The developed ultra-thin silica-coated magnetic particles with a ∼2 nm thin silica shell have a high saturated magnetization around 15 emu g(-1).
authors: Advanced Materials Research Institute, Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA.
authors: Ming
authors: M
authors: Zhang
authors: Brian L
authors: BL
authors: Cushing
authors: Charles J
authors: CJ
authors: O'Connor