The Surface and Bulk Magnetic Properties of Fe-Al Alloys

• Authors: A. Hendrych , O. Životský , Y. Jirásková , I. Maťko
• Languages of publication: EN

Abstracts

EN

The present paper is devoted to Fe-Al alloys with aluminium content of 28, 33 and 35 at.%, prepared by standard technological procedure. The attention is focused on the comparison of the surface and bulk magnetic properties, which were obtained by magneto-optical Kerr effect (MOKE) and atomic and magnetic force microscopy (AFM/MFM) as the surface-sensitive methods combined with the vibration sample magnetometer (VSM) yielding the bulk magnetic properties. As was expected, the Fe_{72}Al_{28} sample shows an overall ferromagnetic behavior at room temperature. Nevertheless, the bulk hysteresis loop shows single-phase behavior, while the surface MOKE hysteresis loop consists of two overlapped curves characterized by different coercivity values. The other two samples are paramagnetic from the viewpoint of the bulk, but reveal ferromagnetic behavior of their surfaces, represented by hysteresis loops, corresponding to rather harder magnetic phase. These results are well supported by MFM.

Keywords

EN

75.50.Bb; 75.70.Rf; 68.37.Rt; 78.20.Ls; 75.60.-d

Discipline

• 68.37.Rt: Magnetic force microscopy (MFM)
• 75.60.-d: Domain effects, magnetization curves, and hysteresis(for dynamics of domain structures, see 75.78.Fg)
• 78.20.Ls: Magneto-optical effects(for magneto-optical devices, see 85.70.Sq)
• 75.70.Rf: Surface magnetism
• 75.50.Bb: Fe and its alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 58-59

Dates

published

2014-07

Contributors

author

A. Hendrych

• Department of Physics and Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, CZ-70833 Ostrava, Czech Republic

author

O. Životský

• Department of Physics and Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, CZ-70833 Ostrava, Czech Republic

author

Y. Jirásková

• CEITEC IPM, Institute of Physics of Materials, AS CR, Žižkova 22, CZ-61662 Brno, Czech Republic

author

I. Maťko

• Institute of Physics, SAS, Dúbravská cesta 9, SK-84511 Bratislava, Slovak Republic

References

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• [4] L.H. Bennett, T.B. Massalski, J.L. Murray, H. Baker, Binary Alloy Phase Diagrams, Ed. T.B. Massalski, American Society for Metals, Metals Park (OH) 1986
• [5] Y. Jirásková, A. Hendrych, O. Životský, J. Buršík, T. Žák, I. Procházka, D. Janičkovič, Appl. Surf. Sci. 276, 68 (2013), doi: 10.1016/j.apsusc.2013.03.022

Identifiers

DOI

10.12693/APhysPolA.126.58