Czechoslovak Journal of Physics

, Volume 56, Supplement 3, pp E45–E50 | Cite as

Structure and phases of low-neodymium NdFeB permanent magnets

  • T. Žák
  • N. Talijan
  • V. Čosović
  • A. Grujić


Structures and phase compositions of two low-neodymium magnetically hard materials, differing by the way of preparation — centrifugal atomization and melt spinning — were compared using Mössbauer spectroscopy, X-ray diffraction and measurements of thermomagnetic curves. Better hard magnetic characteristics of the melt-spun material are explained on the basis of the differences in the content of surface and/or interface Fe(Nd,B) phases. Their remarkable presence in the centrifugally atomized material lowers the content of Fe3B, Fe2B, α-Fe, and Nd2Fe14B phases that are responsible for the magnetic quality of the material. There are only subtle differences in the phase compositions of both materials after thermomagnetic measurement, where the α-Fe phase prevails as a product of the thermal decomposition.

Key words

nanocomposite permanent magnets Mössbauer spectroscopy X-ray diffraction thermomagnetic curve 


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Copyright information

© Institute of Physics, Academy of Sciences of Czech Republic 2006

Authors and Affiliations

  • T. Žák
    • 1
  • N. Talijan
    • 2
  • V. Čosović
    • 2
  • A. Grujić
    • 2
  1. 1.Institute of Physics of MaterialsAS CRBrnoCzech Republic
  2. 2.Institute of Chemistry, Technology and MetallurgyBelgradeSerbia and Montenegro

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