Abstract
The structure, phase transformation and magnetic properties of mechanically alloyed (MA) alloys and have been studied systematically. The compound can be formed within a wide window for the range of composition and annealing temperature. More carbon than the stoichiometric content for is necessary to stabilize the tetragonal structure. Substitution of boron for carbon can accelerate the phase transformation from to and increase the magnetic properties drastically. There is an fcc structure Nd-rich phase in the mechanically alloyed Nd - Fe - C alloy. The lattice constant of the Nd-rich phase decreases as the boron content increases. compounds formed in the alloys with same boron content and different carbon contents have different Curie temperatures. The Curie temperatures also vary with the variation of annealing temperature. The best magnetic properties achieved in alloy are , and .
Published Version
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