Preferential Ordering of Mn and Fe Atoms in Y₆(Fe₁₋ₓMnₓ)₂₃

Neutron diffraction studies of the nomagnetic compositional range of the Y6(Fe1-xMnx)23 system reveal the presence of preferential ordering of Fe and Mn atoms on the four transition metal crystallographic sites. Throughout the entire compositional range of the ternary system, Mn atoms prefer to occupy the f2 site and Fe atoms the f1 site. Refinements of the data were carried out using the Rietveld profile method. © 1980