SYNTHESIS AND INTERFACIAL STRUCTURE OF NANOPARTICLESγ-Fe2O3 COATED WITH SURFACTANT DBS AND CTAB

摘要

The γ-Fe2O3 nanoparticles coated with DBS and CTAB were prepared by the microemulsion method.The coated samples show enhanced nonlinear optical properties compared with their bulk couterpart.The.Moessbauer spectra at room temperature were measured for the coated ferric oxides.The monolayers of the organic molecule are found to have a strong chemical bond with the surface atoms and thus have a significant influence on the electron structure of particle surface.@ 1999 Acta Metallurgica Inc.