Magnetic Properties of Rapidly Quenched Nd10Fe85-xTxB5 (T=Zr, Nb) Alloys

Magnetic properties were studied for Nd10Fe85-xTxB5(T=Zr, Nb; x=0, 4) alloys, which were first rapidly quenched and then crystallized by heat treatment. An energy product of (BH)max=12.2 MGOe, coercive force of iHc=9.2 kOe, and remanence of Br=8.2 kG were achieved in a Nd10Fe81Zr4B5 alloy; the Nd content is the lowest ever reported for a Nd–Fe–B alloy having a high-energy product.