BROWN et al, 2002. Moment instability in Fe65Ni35 and Fe3Pt invar alloys studied with polarised neutrons. Journal of Magnetism and Magnetic Materials, 242-245, pp. 781–787
Polarised neutron diffraction measurements on Fe65Ni35 and Fe3Pt invar alloys show that the shape of the
magnetisation distribution remains essentiallyunchanged in the temperature range 100–600 K. This finding is
inconsistent with band models of the invar effect. Investigation of the magneto-vibrational scattering shows a strong
coupling of the lattice and magnetic degrees of freedom.