The magnetic form factor is a concept in condensed matter physics and materials science that describes how the magnetic scattering amplitude of a particle, such as an electron or a neutron, depends on its momentum transfer during scattering experiments. It is a critical parameter for understanding the magnetic properties of materials at the atomic or subatomic level.
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The scattering-vector dependence of magnetic scattering from the spatial distribution of a magnetic moment, commonly suppressing magnetic intensity at large momentum transfer.