Abstract
The aim of this study is to examine the relation between the stability of ferromagnetism and the atomic volume of FCC Fe-Cu-Au and Fe-Cu-Ni alloys prepared by mechanical alloying. From the measurements of X-ray diffraction, magnetization and Mössbauer effect, we concluded that the ferromagnetism of the FCC iron alloys is stabilized with increasing atomic volume of the alloys. The magnetic moment of iron increases with increasing atomic volume of the alloy up to 2.7μB. The trend is well consistent with that of the result of recent band calculation for FCC iron, which suggests that the local state density of iron in Fe-Cu-Au alloys is close to that of pure iron.
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