Variation in the ratio of Mg2Co and MgCo2in amorphous-like mechanically alloyed MgxCo100–xusing atomic pair distribution function analysis

Abstract

Mg 2 Co- and MgCo 2 -like local atomic arrangements in mechanically alloyed Mg x Co 100– x were investigated using atomic pair distribution function (PDF) analysis derived from synchrotron X-ray total scattering data. We show that changes in Mg x Co 100– x PDFs with x are well explained by the structural features of Mg 2 Co and MgCo 2 . This strongly supports our two-phase model picture where Mg 2 Co-like phase continuously increases while MgCo 2 decreases with increasing Mg content in Mg x Co 100– x .