Magnetic neutron scattering in reduced graphene oxide

The scale of magnetic correlations in materials based on reduced graphene oxide (RGO) has been estimated for the first time using the method of small-angle scattering of polarized neutrons. This information cannot be obtained by other methods. Experiments have demonstrated the presence of small-angle magnetic-nuclear interference scattering for both original RGO and an RGO-based composite in magnetized fields $H$ about 1 T, which unequivocally indicates the presence of magnetized areas on the scale of 1000Å in the studied materials.