Patent ID: 6111782
Filing Date: 2000-08-29
Classification: B82Y,G01R,G11B,G11C,H01F,H01L,H03F

Abstract:
An amplifying device comprising:a magnetoresistive change portion including a first magnetic film, a second magnetic film, and a non-magnetic metal film for separating the first magnetic film from the second magnetic film; andconductive lines for allowing a signal current to flow therethrough, a magnetic field which is produced by the signal current affecting the magnetoresistive change portion,wherein a magnetization curve of the first magnetic film has a good square feature, the first magnetic film having a coercive force incapable of inverting a magnetization of the first magnetic film by the magnetic field produced by the signal current, the second magnetic film having a coercive force capable of inverting a magnetization of the second magnetic film by the magnetic field produced by the signal current.