| 摘要 |
PURPOSE:To make the intensity of a bias magnetic field sufficiently intense, by using a Permalloy film and a thin permanent magnet film as a multilayer shunt film in applying the bias magnetic field intensity. CONSTITUTION:On a substrate 1, a Permalloy film 2 comprising, e.g., Fe-82% Ni, is formed. Then, a Co-20%Pt alloy film 3, which is a permanent magnet film, is formed on the Permalloy film 2. Thereafter, an electrode 4 for conducting a current through said two-layer thin film is formed by Al, Au, or the like. The bias intensity is increased from a curve 6, which indicates the bias intensity caused by the magnetic field formed only by a current, by the amount of the permanent magnetic field, owing to the overlapped magnetic field of the magnetic field formed by the current and the magnetic field formed by the permanent magnet. |
