| 摘要 |
PURPOSE:To enable to form an isotoropic magnetic field of a desired size in an arbitrary direction by making the composition of a magnetic thin film body periodically different to each other. CONSTITUTION:A ferromagnetic film 1 is formed on a substrate 2 composed of a glass, etc. Next, photo resist patterns 3 in stripe form are formed on the film 1. Then, a non-magnetic element, e.g., Cr is implanted into the film 1 with this pattern 3 as a mask. A part of the film 1 varies in composition in stripe form by this implanted ion 4, and then the permeability at the part decreases. Thereby, the film 1 generates a shape anisotropy, thus generating a magnetic an isotropy which shows an easy magnetization axis in the direction of arrows. The anisotropic magnetic field of a desired size can be formed in an arbitrary direction by making the composition of the film periodically different to each other in such a manner. |
