Mössbauer Study of Ordered f.c.c. Fe₃Ge

Abstract

The Mössbuer effect of ⁵⁷Fe in the ferromagnetic ordered f.c.c. Fe₃Ge has been investigated. The observed spectra indicate the presence of two classes of iron atoms. The Mössbauer spectra in high magnetic fields clearly show that the easy direction of magnetization is ⟨100⟩ and that the classification of iron atoms arises from a combined effect of magnetic and electric quadrupole interactions. The anisotropy of the hyperfine fields acting on iron atoms of two classes has been observed.