The neutron techniques used to study magnetism are:
- Neutron topography
- Magnetic scattering
- Inelastic neutron scattering

Neutron Topography

Topography of a neutron magnetic diffraction peak makes it possible to obtain the image of the families of atomic planes that carry magnetism. Magnetic domains are very visible because they do not diffract neutrons in the same manner.

Magnetic scattering

Neutrons interact with atomic nuclei (nuclear scattering or diffraction) but they also interact with their magnetic moments (magnetic scattering or diffraction). An excellent way of detecting the appearance of magnetic order is neutron diffraction, whose diagrams will show a modification of the intensities of the existing peaks and/or specific peaks which were not present before (superstructure peaks). It should be noted that, although a ferromagnetic or ferrimagnetic material is easy to identify due to its magnetization, neutrons are the best means of identifying anti-ferromagnetism, helimagnetism, canted order, etc.
By using polarized neutrons, observation can be directed at unpaired electrons in order to obtain magnetization (spin) density maps.

Inelastic neutron scattering

Scattering process where, within the sample, the neutron exchanges energy with the atom movements and/or with magnetic moment movements.  This results in a change of the direction and energy of the neutrons, effects whose measurement allows the study of correlated movements, in particular that of the network dynamics (phonons) or spin dynamics (magnons).