Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Here we review recent small-angle scattering studies of the vortex lattice in a range of type-II superconductors carried out by our group. Emphasis is placed on providing examples of the kind of information which can be obtained by such measurements, focusing in particular on studies of the vortex lattice structure and form factor in LuNi(2)B(2)C, TmNi(2)B(2)C, CeCoIn(5) and Ba(Fe(0.93)Co(0.07))(2)As(2).