Investigations of the Magnetization Reversal Processes in Nanocrystalline Nd-Fe-B Alloys Doped by Nb
M. Kaźmierczak, P. Pawlik, J.J. Wysłocki, I. Wnuk, P. Gębara, K. Pawlik and A. Przybył
Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland
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In the following article the magnetic properties and phase composition of (Nd10Fe67B23)100-xNbx (where x=5, 6, 7, 8, 9) alloys in the form: of ribbons are discussed. The X-ray diffraction studies revealed the coexistence of amorphous and nanocrystalline structures consisting of Nd2Fe14B, Nd1+εFe4B4 and metastable Nd2Fe23B3 phases. The shape of Mrev (Mirr) suggests that the magnetization reversal proceeds through the nucleation of the reversal domain for the ribbon doped with 5-7 at.% of Nb and the subsequent pinning of the domain walls for ribbons doped with 8 and 9 at.% of Nb.

DOI: 10.12693/APhysPolA.131.789
PACS numbers: 75.30.Sg, 75.50.Bb