Nanocrystalline high performance permanent magnets

Recent developments in nanocrystalline rare earth-transition metal magnets are reviewed and emphasis is placed on research work at IFW Dresden. Principal synthesis methods include high energy ball milling, melt spinning and hydrogen assisted methods such as reactive milling and hydrogenation-disprop...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2002-04, Vol.242-245, p.1277-1283
Main Authors: Gutfleisch, O., Bollero, A., Handstein, A., Hinz, D., Kirchner, A., Yan, A., Müller, K.-H., Schultz, L.
Format: Article
Language:English
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Summary:Recent developments in nanocrystalline rare earth-transition metal magnets are reviewed and emphasis is placed on research work at IFW Dresden. Principal synthesis methods include high energy ball milling, melt spinning and hydrogen assisted methods such as reactive milling and hydrogenation-disproportionation-desorption-recombination. These techniques are applied to NdFeB-, PrFeB- and SmCo-type systems with the aim to produce high remanence magnets with high coercivity. Concepts of maximizing the energy density in nanostructured magnets by either inducing a texture via anisotropic HDDR or hot deformation or enhancing the remanence via magnetic exchange coupling are evaluated. copyright 2002 Elsevier Science B.V. All rights reserved.
ISSN:0304-8853
DOI:10.1016/S0304-8853(01)00989-1