| 摘要 |
PURPOSE:To eliminate accuracy of size and realizes reduction in insize by matching the magnetizing direction to the target direciton with the striped magnetic film used as the bias stripe. CONSTITUTION:After forming a ferromagnetic thin film such as Ni-Co, Ni-Fe, etc. on a chip substrate 1 formed by glass, alumina, ferrite, etc., a desired sensor element 2 is formed. Next, a thin film electric insulation layer 3 such as SiO2, Ai2O3 is stacked thereon to form a thin film 4 having a high anti-magnetic force such as Co-P, ferrite. This thin film layer 4 is molded to a bias stripe 5 and thereafter the bias stripe 5 is then magnetized in the target direction (generally, in the width direction of the bias stripe 5) and the bias stripe 5 is given residual magnetism. With such residual magnetism, bias magnetic field can be applied to the sensor element 2. |
