The structural and magnetic properties of Nd 10 Fe 85 B 5 ribbons produced by meltspinning and subsequent annealing have been studied in this work. A mixture of Nd 2 Fe 14 B and 13 vol.% of Fe was found in the ribbon melt-spun at 30 m s −1 and in samples subsequently annealed. 57 Fe-Mössbauer spectroscopy was used for phase analysis and for study of remanence enhancement. Remanence enhancement was found in ribbons after optimized treatment, after which ribbons consisted of 20-30 nm grains of Nd 2 Fe 14 B and Fe phases. The remanence enhancement effect was attributed to both the soft and hard phases. Demagnetization processes have been studied. All samples exhibited single-phase behaviour, i.e. irreversible demagnetization processes of the hard and soft phases were synchronous even for samples consisting of sub-micron grains. No significant evidence of exchange-spring magnet behaviour was found for samples after optimum treatment. The exchange-spring magnet behaviour was observed in samples annealed at higher temperatures, at which the mean grain sizes were significantly larger than the domain wall thickness of Fe. The magnetic properties of Nd 10 Fe 85 B 5 ribbons in this work were associated with separation of soft Fe grains by Nd 2 Fe 14 B grains because of a low fraction of Fe.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.