Annealing of rapidly quenched sendust ribbon

Abstract

The effect of the heat treatment on the coercive force of Sendust ribbon for the contemporary recording head use prepared by a rapid quenching roll method was examined under various conditions. The room temperature coercive force was decreased when the ribbon was cooled slower than the rate of 103 deg/h and quenched below 800 °C. The lowest coercive force 8 mOe was observed for the ribbon cooled at the rate of 60 deg/min and quenched at 550 °C.