Patent ID: 6979374

Claim:
Magnetic powder composed of 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 kind of rare-earth element excepting Dy, M is at least one kind of element selected from Ti, Cr, Nb, V, Mo, Hf, W, Mn, Zr and Dy, 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), and the magnetic powder being constituted from a composite structure having a soft magnetic phase and a hard magnetic phase, wherein 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 p[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 the formula of (BH) max /ρ 2 [x10 −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 400-760 kA/m.