Patent ID: 8035569
Filing Date: 2011-10-11
Classification: B22F,C21D,C22C,H01F,H01Q

Abstract:
1. An antenna core produced by shaping a soft magnetic metal powder with the use of a resin as a binder, wherein the soft magnetic metal powder is a nanocrystal-containing amorphous soft magnetic metal powder represented by the general formula (2) and formed by heat-treating the soft magnetic metal powder, wherein, in the formula (2), M′ is Co and/or Ni; M is at least one element selected from the group consisting of Nb, Mo, Zr, W, Ta, Hf, Ti, V, Cr, Mn, Y, Pd, Ru, Ga, Ge, C, P, Cu, Au, Ag, Sn and Sb; and x represents an atomic ratio and each of a, b, c and d represents an atomic %, satisfying the relationships: 0≦x≦0.5, 0≦a≦24, 0≦b≦20, 1≦c≦30, 0≦d≦10 and 2≦a+c≦30, and wherein the nanocrystal has a crystallite diameter of not more than 30 nm.