Patent ID: 6350323
Filing Date: 2002-02-26
Classification: H01F

Abstract:
A high permeability metal glassy alloy for high frequency comprising at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti, V, Cr, and W, and B, wherein the temperature interval &Dgr;Tx of a super cooled liquid region, which is represented by the equation &Dgr;Tx is 20Â° C. or more, and resistivity is 200 &mgr;&OHgr;Â·cm or more,wherein said high permeability metal glassy alloy is represented by the following composition formula: (Fe1âˆ’aâˆ’bCoaNib)100âˆ’xâˆ’yMxBy wherein M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti, V, Cr or W, 0&lE;a&lE;0.85, 0&lE;b&lE;0.45, 4 atomic %&lE;x&lE;15 atomic %, and 22 atomic %said high permeability metal glassy alloy further comprising (d) at least one element L selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, Al, Ga, Si, Ge, C and P, the atomic ratio of (Fe1âˆ’aâˆ’bCoaNib):L is 100âˆ’xâˆ’yâˆ’q:q, and 0