From Fe3Si towards Fe3Ge in Finemet-like nanocrystalline alloys: Mössbauer spectroscopy

High-frequency magnetoimpedance properties in Finemet-type ribbons with a Cu–Co electrodeposited layer

“…Finemet-type ribbons (Fe73.5Si6.5Ge7B9Nb3Cu1) [14] ∼1 mm wide and ∼20 m thick were produced by the melt-spinning technique with a single wheel on air. They were mechanically polished using 2000 and 4000 emery papers on both surfaces and subsequently annealed in vacuum for 30 min at 573 K to release stresses.…”

Structure and soft magnetic properties of FINEMET type alloys: Fe73.5Si13.5Nb3 − x Mo x B9Cu1 (x = 1.5, 2)

“…The calibration was done with an α-Fe foil and isomer shifts (IS) are given relative to α-Fe. The spectra were fitted using the NORMOS programme [10] considering six sextets for the different crystalline sites of Fe atoms in a Fe 3 Si non-stoichiometric DO 3 structure (S1 to S6) and two wide sextets for fitting the subspectra corresponding to the amorphous phase (Am1 and Am2) [9].…”

“…In this work, we looked for a further comprehension of the influence of Nb partial substitution by Mo, complementing X-ray diffraction (XRD) and magnetic measurements with Mössbauer spectroscopy (MS). Results were compared to typical FINEMET (Fe 73.5 Si 13.5 B 9 Nb 3 Cu 1 , called from now on Mo0) previously reported [9].…”

A simple method for determining the lattice parameter and chemical composition in ternary bcc-Fe rich nanocrystals

“…In some other works, having the necessary data to determine the chemical composition, it is not reported due perhaps to the lack of a tool for this purpose (for example, [8] in bcc Fe-Si-Al and [9] in bcc Fe-Si-Ge nanocrystals). In previous works [10][11][12], we already employed these two techniques to approach the chemical composition of Fe-Si-Ge and Fe-Si-Al nanocrystals. In this work, we present some theoretical lattice parameter charts in the Fe-rich regions of the Fe-Si-Al, Fe-Si-Ge, Fe-Al-Ge, Fe-CoSi, Fe-Co-Al, and Fe-Co-Ge ternary systems in order to validate the work previously performed by analyzing their structure based on phase diagrams and comparing the results obtained from these charts with experimental results in literature.…”