Patent ID: 7186303
Filing Date: 2007-03-06
Classification: H01F

Abstract:
1. A method of making a magnetic alloy material, the method comprising the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt of the alloy material by a melt-quenching process to obtain a rapidly solidified alloy having a composition represented by the general formula: where RE is at least one rare-earth element that is selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm and that includes at least about 90 at % of La; A is at least one element that is selected from the group consisting of Al, Si, Ga, Ge and Sn; TM is at least one transition metal element that is selected from the group consisting of Sc, Ti, V, Cr, Mn, Go, Ni, Cu and Zn; and mole fractions a, b and c satisfy 5 at %≦a≦10 at %, 4.7 at %≦b≦18 at % and 0 at %≦c≦9 at %, respectively; and thermally treating the rapidly solidified alloy at a temperature of about 400° C. to about 1.200° C. for a period of time of about 1 second to about 100 hours to produce a compound phase having an NaZn