Patent ID: 6855265

Claim:
An isotropic bonded magnet formed by binding a magnetic powder containing Al with a binding resin, wherein the isotropic bonded magnet is characterized in that, the magnetic powder is composed of an alloy composition represented by R x (Fe 1-y Co y ) 100-x-z-w B z Al w (where R is at least one rare-earth element, x is 7.1-9.9 at %, y is 0-0.30, z is 4.6-6.9 at %, and W is 0.02-1.5 at %) when the density of the isotropic bonded magnet is ρ[Mg/m 3 ], the maximum magnetic energy product (BH) max [kJ/m 3 ] at room temperature satisfies the relationship represented by the formula (BH) max ρ 2 [×10 −9 J·m 3 /g 2 ]≧2.1, and the intrinsic coercive force (H CJ ) of the bonded magnet at the room temperature is in the range of 320-720 kA/m.