Magnetic Properties and Phase Constitution of the Nanocrystalline (Nd10Fe67B23)100-xNbx (where x=1, 2, 3, 4) Alloy Ribbons
M. Kaźmierczak, K. Pawlik, P. Pawlik, P. Gębara, A. Przybył, J.J. Wysłocki
Institute of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland
Received: February 2, 2015
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In the present work the magnetic properties and phase constitution of (Nd10Fe67B23)100-xNbx (where x=1, 2, 3, 4) alloys in a form of ribbons were investigated. The ribbon samples were obtained by controlled atmosphere melt-spinning technique. In order to generate the nanocrystalline microstructure, ribbons were annealed at various temperatures (from 923 K to 1023 K) for 5 min. Subsequent annealing resulted in an evolution of the phase constitution accompanied by a change of their magnetic properties. The X-ray diffraction studies show presence of hard magnetic Nd2Fe14B, paramagnetic Nd1+εFe4B4 and ferromagnetic metastable Nd2Fe23B3 phases. The best hard magnetic parameters were measure for annealed ribbons of the (Nd10Fe67B23)96Nb4 alloy.

DOI: 10.12693/APhysPolA.128.91
PACS numbers: 75.20.En, 91.60.Pn