Patent ID: 6648989
Filing Date: 2003-11-18
Classification: B22D,H01F,Y10T

Abstract:
A magnetic powder comprising:an alloy composition represented by the formula Rx(Fe1-yCoy)100-x-zBz(where R is at least one rare-earth element selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and misch metal, x is 10-15 at %, y is 0-0.30, and z is 4-10 at %) wherein the magnetic powder includes particles each of which is formed with a number of ridges or recesses on at least a part of a surface thereof; and the ridges or recesses are arranged parallel with each other to have an average pitch of 2.2-47.5 &mgr;m.