Synthesis, X-Ray analysis, and Mössbauer investigation of Al-Cu-Fe quasicrystals

Structural Characterization of Al65Cu20Fe15 Melt-Spun Alloy by X-ray, Neutron Diffraction, High-Resolution Electron Microscopy and Mössbauer Spectroscopy

“…The hyperfine interaction parameters obtained from the analysis of the spectra are summarized in Table 1 . The Mössbauer spectrum of the alloy in the form of ribbon can be fitted by the three singlets corresponding to the Al 13 Fe 4 phase [ 30 , 31 ] and also by two doublets. The first doublet (Is = 0.19 mm/s, Qs = 0.73 mm/s) is associated with the Al phase rich in Cu and Fe elements.…”

“…The Mössbauer spectrum of the master alloy (ingot) contains four singlets and two quadrupole doublets. The values of the isomer shift of the first three singlets are typical for the Al 13 Fe 4 phase and the fourth singlet (Is = 0.14 mm/s) is connected with the Al 7 Cu 2 Fe phase [ 31 ]. The doublet with Is = 0.34 mm/s and Qs = 0.24 mm/s is related to iron located in body centered cubic structure of AlFe(Cu) [ 31 ].…”

“…The values of the isomer shift of the first three singlets are typical for the Al 13 Fe 4 phase and the fourth singlet (Is = 0.14 mm/s) is connected with the Al 7 Cu 2 Fe phase [ 31 ]. The doublet with Is = 0.34 mm/s and Qs = 0.24 mm/s is related to iron located in body centered cubic structure of AlFe(Cu) [ 31 ]. According to the XRD results, the doublet with the highest contribution was associated with the quasicrystalline Al-Cu-Fe phase.…”