Open AccessFactors affecting coercivity in rare-earth based advanced permanent magnet materials
Author(s) -
L. H. Lewis,
C.H. Sellers,
V. Panchanathan
Publication year - 1997
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/432961
Subject(s) - coercivity , materials science , microstructure , magnet , melt spinning , rare earth , inert , spinning , metallurgy , composite material , condensed matter physics , chemistry , mechanical engineering , physics , organic chemistry , engineering
The relationships that link microstructural properties of advanced permanent magnet materials with magnetic properties such as the coercivity are often difficult to quantify, especially in materials with nano-scale structures. Recent work on RE{sub 2}Fe{sub 14}B-based powders fabricated with rapid-solidification techniques such as inert gas atomization (IGA) and melt-spinning provide insight into the nanostructural features which affect the acquisition and stability of coercivity. In all cases the coercivity is found to be a function of both the scale of the constituent microstructure and of the presence and distribution of minor phases
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