Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 690, Issue -, Pages 281-286Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.08.150
Keywords
Cu clusters; Amorphous materials; Soft magnetic properties; Mossbauer spectra; Two-step annealing
Categories
Funding
- National Nature Science Foundation of China [51571115]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Joint Innovation Foundation of Industry and University of Jiangsu Province [BY2013003-01]
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Not all Cu clusters in Fe-based nanocrystalline alloys can significantly influence the soft magnetic properties. In this study, a density increment of beneficial Cu clusters serving as heterogeneous nucleation sites was obtained by the two-step annealing of the Fe83B10C6Cu1 alloy. The formation and growth of Cu clusters during pre-annealing process were investigated by Mossbauer spectra. An increase of saturation flux density (B-s) from 1.76 T to 1.81 T and a distinct decrease of coercivity (H-c) from 8.8 Aim to 3.2 Aim were achieved by the two-step annealing. The density increment of beneficial Cu clusters is believed to be the main reason why-the two-step annealed Fe83B10C6Cu1 alloy has an increased Bs and a decreased Hc. (C) 2016 Elsevier B.V. All rights reserved.
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