A MECHANISM FOR OBTAINING A SINGLE MAGNETIZATION STATE IN PERMALLOY-FILMS

Magnetoresistive permalloy films are characterized by having two possi ble output states that correspond to different directions of magnetiza tion. This article describes the use of a pulsed easy axis field to ob tain a single predictable state that does not depend upon the past his tory of the external applied field. The magnetization reversal occurs at one field value only which is opposite in direction to the pulsed e asy axis field direction and is accurately predicted by the Stoner-Woh farth model.