| 摘要 |
PURPOSE:To attain magnetic characteristics and corrosion resistance which are comparable to or higher than those of a Co-Ni alloy at a low cost by using Fe as the principal component of a magnetic layer to be formed by a thin film deposition method, and adding fixed percentages of Co, Ni and other specified substance to Fe. CONSTITUTION:A magnetic layer is formed by a thin film deposition method such as vapor deposition with electron beams, vapor deposition by induction heating, vapor deposition by resistance heating, sputtering, ion plating or plating using an Fe-base material contg. Co, Ni and at least one among Ti, Zr and Hf. The desirable composition of the magnetic layer is represented by a formula (Fe1-xCox)1-(a+b)NiaXb, wherein X is at least one among Ti, Zr and Hf, 0<x<=0.5, 0.05<=a<=0.25, and 0.01<=b<=0.12 (weight ratio). The especially desirable composition consists of, by weight, 2-8% in total of one or more among Ti, Zr and Hf, 8-20% Ni, 15-40% Co and the balance Fe. |
