Patent ID: 6379810
Filing Date: 2002-04-30
Classification: B82Y,H01F,Y10S

Abstract:
A magnetic film expressed by a composition formula TaMbXcNdOc, whereT is either Fe or a metal alloy comprising not less than 30 at. % of Fe and at least one selected from the group consisting of Co and Ni, M is at least one selected from the group consisting of Be, Mg, Ca, Sr and Ba, and X is at least one selected from the group consisting of Y, Ti, Zr, Hf, V, Nb, Ta and lanthanoid series, a, b, c, d, and e represent at. % and satisfy the following equations a+b+c+d+e=100, 45&lE;a&lE;85, 5.5&lE;b&lE;28, 0.5&lE;c&lE;16, 6&lE;b+c&lE;28.5, â€ƒ0.4&lE;56,0&lE;d&lE;10, and8&lE;d+e&lE;40, wherein the magnetic film comprises metal magnetic crystal grains having an average crystal grain diameter of not more than 15 nm and a grain boundary product, the main component of the metal magnetic crystal grains is T, the grain boundary product contains at least an oxide or a nitride of M and X, and the magnetic film has a saturation magnetic flux density of not less than 0.8 Tesla and an electric resistivity of not less than 80 &mgr;&OHgr;cm.