REMANENCE LOOP ASYMMETRY AND MOVING-TYPE PREISACH MODELS

The observed asymmetry of the major remanence loop of a particulate re cording sample can be described by the complete-moving-hysteresis (CMH ) model using a symmetrical Preisach distribution. The amount of asymm etry depends on the moving parameter, the squareness, and the reversib le magnetization. It is shown that, for certain types of materials, th e major hysteresis loop and the major remanence loop provide sufficien t information to identify the moving parameter.