INFLUENCE OF DISORDER ON THE MAGNETOOPTICAL PROPERTIES OF FEPT

A scheme to deal with the magneto-optical properties of randomly disor dered alloys is presented. This aim is achieved by calculating the opt ical conductivity tensor sigma(omega) for a number of ordered model co mpounds that differ in their atomic configuration within the unit cell but not in their composition. In a subsequent step the orientational and configurational average [sigma(omega)] is taken. The magneto-optic al properties are derived then from this in the conventional way. As i t is demonstrated for FePt this approach accounts for the the influenc e of disorder on its magneto-optical properties in a very satisfying w ay. (C) 1997 Elsevier Science Ltd.