Abstract
From XRD, TMA, VSM and TEM studies, the Nd 2Fe 80B 18 permanent magnet has Fe 3B, α-Fe and Nd 2Fe 14B of, respectively, 40, 30 and 30 wt% with i H c =1.1 kOe , B r =1.5 T and ( BH) max=8 MG Oe. The Nd 10Fe 82B 8 p.m has a homogeneous fine Nd 2Fe 14B phase of 70 nm and soft α-Fe and Fe 3B phases of 15 nm with the remanence of 1.0 T due to the exchange coupling between nanocomposites.
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