Microstructure and some magnetic properties of bulk amorphous (Fe0.61Co0.10Zr0.025Hf0.025Ti0.02W0.02B0.20)100−xYx (x=0, 2, 3 or 4) alloys
| Autor: | K. Sobczyk, J. Gondro, W.H. Ciurzyńska, J. Zbroszczyk, P. Brągiel, M. NabiaŁek, J. Rzącki, A. Lukiewska, J. Świerczek, Jacek Olszewski |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Annealing (metallurgy) Alloy Analytical chemistry engineering.material equipment and supplies Condensed Matter Physics Microstructure Magnetic susceptibility Electronic Optical and Magnetic Materials Amorphous solid Nuclear magnetic resonance Ferromagnetism engineering Amorphous metal transformer human activities Hyperfine structure |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 324:540-549 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2011.08.038 |
| Popis: | Microstructure, revealed by X-ray diffraction, transmission electron microscopy and Mossbauer spectroscopy, and magnetic properties such as magnetic susceptibility, its disaccommodation, core losses and approach to magnetic saturation in bulk amorphous (Fe 0.61 Co 0.10 Zr 0.025 Hf 0.025 Ti 0.02 W 0.02 B 0.20 ) 100− x Y x ( x =0, 2, 3 or 4) alloys in the as-cast state and after the annealing in vacuum at 720 K for 15 min. are studied. The investigated alloys are ferromagnetic at room temperature. The average hyperfine field induction decreases with Y concentration. Due to annealing out of free volumes its value increases after the heat treatment of the samples. The magnetic susceptibility and core losses point out that the best thermal stability by the amorphous (Fe 0.61 Co 0.10 Zr 0.025 Hf 0.025 Ti 0.02 W 0.02 B 0.20 ) 97 Y 3 alloy is exhibited. Moreover, from Mossbauer spectroscopy investigations it is shown that the mentioned above alloy is the most homogeneous. The atom packing density increases with Y concentration, which is proved by the magnetic susceptibility disaccommodation and approach to magnetic saturation studies. |
| Databáze: | OpenAIRE |
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