Abstract
Abstract The magnetic properties of Nd 11 Fe 72− x Co 8 V 1.5 Cr x B 7.5 ( x =0,1) nanocomposites prepared by the crystallization of amorphous precursors have been investigated. It was found that Cr addition increases the crystallization temperature of the amorphous ribbons, resulting in the formation of a metastable phase of Nd 2 Fe 23 B 3 and improved magnetic properties. After optimal thermal treatment, the intrinsic coercivity ( J H c ) and maximum magnetic energy product (( BH ) max ) increase from 780 kA/m, 68 kJ/m 3 for Nd 11 Fe 72 Co 8 V 1.5 B 7.5 sample to 903.5 kA/m, 71 kJ/m 3 for Nd 11 Fe 71 Co 8 V 1.5 Cr 1 B 7.5 sample, respectively.
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