NdFeB Permanent Magnets with Various Nd Content |
| T. Žák
Institute of Physics of Materials, Academy of Sciences of the Czech Rep., v.v.i.,Žižkova 22, 616 62 Brno, Czech Republic N. Talijan, V. Ćosović and A. Grujić Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia |
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| Received: 9 07 2007; |
| Three kinds of commercial Nd-Fe-B based materials were compared using 57Fe Mössbauer spectroscopy and X-ray analysis: near the Nd2Fe14B stoichiometry and with both lowered and raised Nd content. Magnetically hard Nd2Fe14B is present in all three materials. In the Nd-low material it is accompanied with the magnetically soft Fe3B phase, building the nanocomposite structure. In the Nd-rich sample the overstoichiometric Nd atoms seem to build separate phase of Fe-Nd solid solution. None of the materials contain significant content of phases degrading magnetic characteristics, with except of minor Nd1.1Fe4B4 one. |
| DOI: 10.12693/APhysPolA.113.279 PACS numbers: 61.05.cp, 76.80.+y, 75.50.-y, 81.07.-b, 81.40.Rs |