Premium
Small‐angle X‐ray and small‐angle neutron scattering investigations of colloidal dispersions of magnetic nanoparticles and clay nanoplatelets
Author(s) -
Paula F. L. O.,
Aquino R.,
Da Silva G. J.,
Depeyrot J.,
Tourinho F. A.,
Fossum J. O.,
Knudsen K. D.
Publication year - 2007
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889807009181
Subject(s) - scattering , small angle neutron scattering , neutron scattering , colloid , materials science , magnetic nanoparticles , nanoparticle , dispersion (optics) , biological small angle scattering , small angle x ray scattering , small angle scattering , condensed matter physics , optics , analytical chemistry (journal) , chemistry , nanotechnology , physics , chromatography
We investigated mixed colloidal dispersions of clay platelets and magnetic nanoparticles using small‐angle X‐ray and neutron scattering. Our results show that the contribution to the scattering is essentially due to the magnetic nanoparticles. The scattering intensities are proportional to the concentration of magnetic particles, indicating that from the scattering point of view the sample is a colloidal dispersion of non‐interacting magnetic objects, although the laponite and magnetic particles clearly interact when the sample textures are observed in an optical microscope. The visually observed phase separation may be characterized as a liquid–gas transition.