Neutron depolarisation study of magnetic order in a-Fe90Sc10Dx (0 ≤ x ≤ 28)

Abstract Ac susceptibility and neutron depolarisation have been used to study magnetic order in a-Fe 90 Sc 10 loaded with between 0 and 28 at% deuterium. The addition of 3 at% D more than doubles T C and converts the as-cast alloy from a spin glass to a ferromagnet with 0.4 μm domains. Saturating the material with deuterium leads to a further doubling of both the domain size and T C .