Patent ID: 6232775
Filing Date: 2001-05-15
Classification: C22C,G01R,G11B,H01F

Abstract:
A magneto-impedance element comprising an alloy having a mixed texture of an amorphous phase and a fine crystalline phase having an average crystal grain size of 50 nm or less, said magneto-impedance element showing a change in impedance in response to an external magnetic field by applying an alternating current, wherein said alloy has a composition represented by the following formula:(Fe.sub.1-a-b Co.sub.a Ni.sub.b).sub.c B.sub.x M.sub.ywherein M is at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W; and the subscripts a, b, c, x and y satisfy the relationships: 0.ltoreq.a+b.ltoreq.0.1, 75 atomic percent.ltoreq.c.ltoreq.93 atomic percent, 0.5 atomic percent .ltoreq.x.ltoreq.18 atomic percent, and 4 atomic percent.ltoreq.y.ltoreq.9 atomic percent.