Patent ID: 6896745

Claim:
A magnetic powder comprising: an alloy composition represented by R x (Fe 1−a Co a ) 100−x−y−z B y M z (where R is at least one rare-earth element selected from the group consisting of Nd and Pr, a ratio of Pr with respect to a total mass of R is in the range of 20-60%, M is at least one element selected from Ti, Cr, Nb, V, Mo, Hf, W, Mn, and Zr, x is 7.1-9.9 at %, y is 4.6-8.0 at %, z is 0.1-3.0 at %, and a is 0-0.30); wherein the magnetic powder further comprises a composite structure having a soft magnetic phase and a hard magnetic phase; an average particle size of the magnetic powder is 1-50 μm; and when the magnetic powder is mixed with a binding resin and then the mixture is subjected to injection molding or extrusion molding to form a bonded magnet having a density ρ[Mg/m 3 ], a maximum magnetic energy product (BH) max [kJ/m 3 ] of the bonded magnet at room temperature satisfies a relationship represented by a formula of (BH) max/ ρ 2 [×10 −9 J·m 3 /g 2 ]≧2.10, and an intrinsic coercive force H CJ of the bonded magnet at room temperature is in a range of 430-760 kA/m.