Coercivity of Ti-modified (α-Fe)-Nd2Fe14B nanocrystalline alloys
- 15 November 1994
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 76 (10) , 7071-7073
- https://doi.org/10.1063/1.358030
Abstract
Coercivity of Ti‐modified nanocrystalline (α‐Fe)‐Nd2Fe14B alloys with soft iron particles embedded in hard Nd2Fe14B matrix was studied. The alloys were prepared by melt spinning and annealing. The grain size of Nd2Fe14B is from 20 to 60 nm, while that of the soft iron particles is 11 to 30 nm. The coercivity of the annealed flakes decreased dramatically with increasing particle size of free iron, following the same tendency of a theoretical calculation by Schrefl et al. For the Ti‐alloyed flakes, the 1 at. % Ti‐containing ones show the highest coercivity of 11.1 kOe. Its (BH)m value is about 16 MGOe despite lower Nd and B contents than stoichiometric Nd2Fe14B. More Ti addition would deteriorate the coercivity.This publication has 8 references indexed in Scilit:
- New nanocrystalline high-remanence Nd-Fe-B alloys by rapid solidificationJournal of Magnetism and Magnetic Materials, 1993
- Giant energy product in nanostructured two-phase magnetsPhysical Review B, 1993
- Exchange hardening in nano-structured two-phase permanent magnetsJournal of Magnetism and Magnetic Materials, 1993
- High-Coercivity Nd-Fe-B-M Alloys with Low Level of Nd and B (M=Ti/V/Mo/Al)Japanese Journal of Applied Physics, 1992
- Magnetic properties of NdFeTiB alloys with NdFe11Ti and/or Nd2Fe14B phasesJournal of Magnetism and Magnetic Materials, 1992
- Processing of Neodymium-Iron-Boron melt-spun ribbons to fully dense magnetsIEEE Transactions on Magnetics, 1985
- Pr-Fe and Nd-Fe-based materials: A new class of high-performance permanent magnets (invited)Journal of Applied Physics, 1984
- Reaction Kinetics in Differential Thermal AnalysisAnalytical Chemistry, 1957