Flux storage characterstics of thin magnetic films for analog operation

Thin magnetic films may be employed as storage elements of a sampling recorder for measuring transient signals. By writing into successive films with a given signal at known time intervals and then utilizing the magnetization transfer characteristics, i.e., readout voltage versus write current, a time-amplitude reconstruction of the signal can be obtained. This mode of operation for a coupled thin magnetic film configuration, along with the difficulties in nondestructively reading out the film, is discussed.