Patent ID: 6183889
Filing Date: 2001-02-06
Classification: B82Y,G01R,G11B,H01L,Y10S,Y10T

Abstract:
A magneto-impedance element, showing a change in impedance in response to an external magnetic field when an alternating current is applied, comprising a glassy alloy comprising at least one base metal selected from the group consisting of Fe, Co and Ni; at least one additional metal selected from the group consisting of Zr, Nb, Ta, Hf, Mo, Ti and V; and B; and having a temperature region .DELTA.T.sub.x of the supercooling liquid zone of 20.degree. C. or more, said temperature region being represented by the equation .DELTA.T.sub.x =T.sub.x -T.sub.g wherein T.sub.x is the crystallization temperature and T.sub.g is the glass transition temperature, and wherein said glassy alloy has a composition represented by the following formula and a .DELTA.T.sub.x of 50.degree. C. or more:(Fe.sub.1-a-b CO.sub.a Ni.sub.b).sub.100-x-y-z M.sub.x B.sub.ywherein 0.ltoreq.a.ltoreq.0.29, 0.ltoreq.b.ltoreq.0.43, 5 atomic percent .ltoreq.x.ltoreq.20 atomic percent, 10 atomic percent .ltoreq.y.ltoreq.22 atomic percent, and M is at least one metal selected from the group consisting of Zr, Nb, Ta, Hf, Mo, Ti and V.