Structural studies and site occupations in isoelectronic Co(GaVFe) alloys

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Abstract
Neutron diffraction and Mossbauer measurements have been used to determine the structures of a series of Co(GaVFe) alloys having a constant electron concentration. Despite wide variations in composition the alloys exhibit a similar structure with the V and Fe site occupations appearing to follow a similar pattern to that observed for the simpler Co(GaV) and Co(GaFe) alloy systems. For the latter systems previous measurements have indicated that Fe atoms occupy equivalent Ga sites identically whereas V atoms develop a preference for one type of Ga site leading to L21 order as the concentration increases beyond a critical value.

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