Patent ID: 6632520
Filing Date: 2003-10-14
Classification: B32B,B82Y,C22C,C23C,G11B,H01F,Y10T

Abstract:
A magnetic film comprising a substantially crystalline magnetic layer and an intermediate layer alternately formed in contact with each other,wherein the magnetic layer has a composition represented by (M1&agr;1X1&bgr;1)100âˆ’&dgr;1A1&dgr;1 (where &agr;1, &bgr;1, and &dgr;1 represent % by atomic weight; M1 is at least one magnetic metal selected from the group consisting of Fe, Co, and Ni; X1 is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Si, Ge, Sn, Al, Ga, and transition metals excluding the M1; and A1 is at least one selected from the group consisting of O and N), the magnetic layer has the following composition range: 0.1&lE;&bgr;1&lE;12 &agr;1+&bgr;1=100 01&lE;10 the intermediate layer has a composition represented by (M2&agr;2X2&bgr;2)100âˆ’&dgr;2A2&dgr;2 (where &agr;2, &bgr;2, and &dgr;2 represent % by atomic weight, M2 is at least one magnetic metal selected from the group consisting of Fe, Co, and Ni; X2 is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Si, Ge, Sn, Al, Ga, Ge and transition metals excluding the M2; and A2 is O), the intermediate layer has the following composition range: 0.1&lE;&bgr;2&lE;80 &agr;2+&bgr;2=100 &dgr;1&lE;&dgr;2&lE;67.