Magnetic Field Analysis Taking Hysteresis Phenomena into Consideration

One of the methods for describing arbitrary magnetization processes mathematically is to utilize the particle distribution function on the Preisach diagram, in which a magnetic material is assumed to be composed of magnetic dipoles having rectangular hysteresis loops. By incorporating 2D magnetic field analysis based on a finite element method with the diagram, we have developed a new analysis program. It can be applied to the analysis of a magnetic circuit with hysteresis phenomena of magnetic materials at static field. We calculated the reproducing output characteristics in perpendicular magnetic recording; the results obtained were in better agreement with experimental results than those obtained by conventional methods.