The Analysis of Magnetization Curves

Abstract

By an analysis of a magnetization curve is meant the determination of the character and extent of the various elementary changes occurring over any part of the curve. Even if the quantitative characteristics of the various elementary processes are known, an analysis cannot in general be made simply on the basis of the information provided by a given magnetization curve, owing to the varied and complicated way in which the different processes are superposed with an ordinary polycrystalline specimen. Further information is obtainable from measurements such as those of Bates on the thermal changes accompanying adiabatic magnetization, but little progress can be made in the analysis of curves in the hysteresis range unless the magnetic and thermal effects due to the reversible and irreversible changes separately can be unambiguously determined.