Understanding the microstructure and coercivity of high performance NdFeB-based magnets

Understanding the subtle link between coercivity and microstructure is essential for the development of higher performance magnets. In the case of R–Fe–B (R=rare earth) based materials this knowledge will be used to enable the development of high coercivity, Dy-free permanent magnets, which are rele...

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Bibliographic Details
Published in:Scripta materialia 2012-09, Vol.67 (6), p.536-541
Main Authors: Woodcock, T.G., Zhang, Y., Hrkac, G., Ciuta, G., Dempsey, N.M., Schrefl, T., Gutfleisch, O., Givord, D.
Format: Article
Language:English
Subjects:
Coercivity
Condensed Matter
Materials Science
Micromagnetics
NdFeB
Permanent magnets
Physics
Transmission electron microscopy
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Summary:Understanding the subtle link between coercivity and microstructure is essential for the development of higher performance magnets. In the case of R–Fe–B (R=rare earth) based materials this knowledge will be used to enable the development of high coercivity, Dy-free permanent magnets, which are relevant for clean energy technologies. A combination of high resolution characterization, molecular dynamics and micromagnetic simulations and model thick film systems has been used to gain valuable new insights into the coercivity mechanisms in R–Fe–B magnets.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2012.05.038