Patent ID: 6284061
Filing Date: 2001-09-04
Classification: C22C,G11B,H01F

Abstract:
A soft magnetic amorphous alloy comprising a composition of at least one element of Fe, Co, and Ni as a main component, and at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width .DELTA.Tx of a supercooled liquid region is 50.degree. C. or more, wherein .DELTA.Tx is expressed by the equation .DELTA.Tx=Tx-Tg, wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature, and wherein the magnetic permeability is at least about 1500 at about 1 kHz, and wherein the composition is expressed by the following formula:(Fe.sub.1-a-b Co.sub.a Ni.sub.b).sub.100-x-y M.sub.x B.sub.ywherein 0.ltoreq.a.ltoreq.0.29, 0.ltoreq.b.ltoreq.0.43, 5 atomic %.ltoreq.x.ltoreq.20 atomic %, 10atomic %.ltoreq.y.ltoreq.22 atomic %, and M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V.