Magnetostatic potential wells and drive fields in field access bubble domain drive circuits

Abstract

A technique for experimentally measuring the z‐component fields produced by Permalloy drive circuits in the presence of both bubble and external in‐plane drive fields is proposed. Experimental results based upon this technique are presented for a simple bar, a Y‐bar propagation pattern and a chevron propagation pattern. The implications of these results with respect to device operation and design are discussed.