Properties of Mn-doped FINEMET

• Published in: Journal of alloys and compounds Vol. 470; no. 1; pp. 5 - 11
• Main Authors: Brzozowski, R., Wasiak, M., Piekarski, H., Sovak, P., Uznański, P., Moneta, M.E.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 20.02.2009; Elsevier
• Subjects: Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; DSC; Exact sciences and technology; FINEMET; Magnetic properties and materials; Materials science; Mn doping; Mössbauer spectroscopy; Physics; Thermal properties of condensed matter; Treatment of materials and its effects on microstructure and properties; XRD; FINEMET; DSC; Mössbauer spectroscopy; 75.50.Tt; 61.18Fs; 76.80+y; XRD; 75.75+a; Mn doping; Moessbauer spectroscopy; Precursor; Crystallites; Paramagnetic materials; Iron base alloys; Magnetic properties; Grain size; Differential scanning calorimetry; Hyperfine magnetic field; Annealing; Crystallization; Manganese additions; Amorphous alloy; X-ray spectra; Indium additions; Dispersive spectrometry; Manganese alloys; Thermodynamic properties
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2008.02.048

Structural, thermodynamical and magnetic properties of Fe 73.5 − x Si 13.5 B 9 Cu 1 Nb 3 Mn x amorphous alloys, with Mn content x = 1 , 3 – 15 , were studied by means of X-ray diffraction (XRD), differential scanning calorimetry (DSC), Mössbauer spectroscopy (MS) and energy-dispersive X-rays (EDX), as-quenched and after annealing. The alloys with x ≤ 7 suffer primary (above ∼ 550 °C) and secondary (below ∼ 680 °C) crystallisation, whereas the alloys with x ≥ 9 only at ∼ 580 °C. Mn doping results in increase (for x ≤ 7 ) and then (for x ≥ 9 ) in decrease of grain size. The hyperfine field of the amorphous precursor and remainder substantially decrease with increase of Mn content x, whereas the fields in crystallites remain nearly independent of x. A paramagnetic component appears at x ∼ 9 and grows with x.