Gold-iron System investigated by means of the Mössbauer Spectroscopy

and X-ray Diffraction

Artur Błachowski 1, Krzysztof Ruebenbauer 1, Jan Żukrowski 2, Janusz Przewoźnik 2

1 Mössbauer Spectroscopy Division,Institute of Physics, Pedagogical University, Kraków, Poland

 2 Solid State Physics Department, Faculty of Physics and Applied Computer Science,

AGH University of Science and Technology, Kraków, Poland

Fe-Au Phase DiagramT.B. Massalski, Binary Alloy Phase Diagrams, 1990

Mössbauer Spectroscopy as-cast Fe100-cAuc annealed 500oC / 48h

X-ray Diffraction

Fe100-cAuc

SEM Fe70Au30 Fe50Au50

Fe30Au70

Fe

Fe

Au

Au

Conclusions

1) Ferromagnetic order at room temperature of FCC–Au(Fe) phase, disappears after annealing at 500ºC / 48h.

2) Nanoparticles of FCC-Au(Fe) and BCC-Fe(Au) phases with diameter about 50 nm.