Temperature Behaviour of Hyperfine Magnetic Fields in a Fe-Co-Si-B-Mo-P Metallic Glass Followed with 57Fe Mössbauer Spectrometry
M. Cesneka, M. Miglierinia,b, T. Kmječ c, T. Kohout c, N. Aminib,d, D. Janičkovič e and P. Matúš f
aDepartment of Nuclear Reactors, Czech Technical University, V Holešovičkách 2, 180 00 Praha, Czechia
bSlovak University of Technology in Bratislava, Ilkovičova 3, 812 19 Bratislava, Slovakia
cCharles University in Prague, Faculty of Mathematics and Physics, V Holešovičkách 2, 180 00 Prague, Czechia
dDepartment of Physics, Bu-Ali Sina University, 65174-4161, Hamedan, Iran
eInstitute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia
fInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia
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Amorphous glass with nominal chemical composition Fe51Co12Si16B8Mo5P8 was studied by combination of the Mössbauer spectroscopy and magnetic measurements in order to characterize magnetic and structural features. Temperature evolution of the Mössbauer spectra revealed presence of broad distribution of hyperfine magnetic field at lower temperatures which vanishes with increase of temperature. The Curie temperature estimated from the Mössbauer spectroscopy experiments is TC ≈ 392 K. This value is in a good agreement with that obtained by magnetic measurements (TC=397 K). The Mössbauer spectroscopy spectra of the sample annealed at 823 K revealed a presence of crystalline components. This temperature is notably lower than the expected temperature of the onset of crystallization observed by differential scanning calorimetry ( ≈ 835 K).

DOI: 10.12693/APhysPolA.131.744
PACS numbers: 75.50.Kj, 75.60.Ej, 75.75.-c, 76.80.+y