EFFECT OF APPARENT REVERSIBILITY ON PARAMETER-ESTIMATION

In materials with large magnetic moments, the interaction field can be sufficiently large so that the Preisach function has a significant co ntribution outside the fourth quadrant of the Preisach plane, It is sh own that such media, even a perfectly aligned medium that has an appar ent reversible component, will have nonzero squareness, In this case, one has to distinguish between remanence and the irreversible componen t of the magnetization, Since measurements cannot distinguish between the two effects, the procedure for the identification of model paramet ers must model the effects and use their different properties in order to separate them, This paper discusses such an identification procedu re.