Microstructural analysis of Fe-Si-Al alloy powders and films by Mössbauer spectrometry

Mössbauer studies on the shape effect of Fe84.94Si9.68Al5.38particles on their microwave permeability

“…It should be noted that Fe surrounding environments depend on composition, fabrication method, etc. [18][19][20][21] The measured Mössbauer spectra of unmilled particles and particles being milled for 10 h can be decomposed 083303-3 into 5 sextet subspectra as shown in Figs. 5(a) and 5(b).…”

“…Nomura et al [18] have shown that different fabrication processes of Fe-Si-Al alloys can result in different Fe-sites and therefore different Mössbauer spectra. Miyazaki et al, [19] Stearns, [20] and Nomura et al [21] have assigned the sites with different Bhf values (29.86, 21.33, 19.74, 24.09, and 27.36 T) to Fe-1, Fe-2, Fe-3, Fe-4, and Fe-5 respectively as shown in Table 1. Our extracted Mössbauer parameters are very close to their data.…”

“…However, it is found that the Mössbauer spectrum of Fe-Si-Al alloy is significantly dependent on the form of material (such as films, bulks, powder, ribbons), while the form of material depends on the fabrication method. [18][19][20][21] In this paper, Mössbauer experiments are carried out to uncover the possible changes of Fe atom environments in Fe-Si-Al particles, which were milled for different time lengths (0, 10, 20, and 30 h). We will present the Mössbauer spectra of Fe-Si-Al particles in irregular shapes and flakes.…”