Comparison of disorder induced by annealing and quench and by ball-milling in B2 FeCo

Order‐disorder in FeCo are studied by X‐ray diffraction, Mössbauer spectroscopy and saturation magnetization measurements in applied fields up to 10 T. Order is promoted by annealing at 550 °C and the alloy is disordered either by high‐temperature annealing at 980 °C followed by a quench into cooled...

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Veröffentlicht in:	Physica status solidi. C 2011-11, Vol.8 (11-12), p.3087-3090
Hauptverfasser:	Loureiro, J. M., Malaman, B., Costa, B. F. O., Le Caër, G., Khomchenko, V. A., Das, S., Amaral, V. S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Annealing Diffraction Disorders FeCo alloys General Physics magnetization measurements Milling (machining) Mossbauer spectroscopy Mössbauer spectroscopy order-disorder Physics Saturation (magnetic) Solid state physics X-rays
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Zusammenfassung:	Order‐disorder in FeCo are studied by X‐ray diffraction, Mössbauer spectroscopy and saturation magnetization measurements in applied fields up to 10 T. Order is promoted by annealing at 550 °C and the alloy is disordered either by high‐temperature annealing at 980 °C followed by a quench into cooled water or by ball‐ milling. A more disordered state is reached by ball‐milling in our dynamical conditions than the one reported to be attained by annealing and quench even at rather high rates. A saturation magnetization as high as 2.51 μB/at. is obtained. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	1862-6351 1610-1642 1610-1634 1610-1642
DOI:	10.1002/pssc.201000776