公开(公告)号：DE2817862A1

公开(公告)日：1978-12-14

申请号：DE2817862

申请日：1978-04-24

Applicant: IBM

Inventor： BEALL GREGORY WALTER ,  COHEN MITCHELL SIMMONS ,  KRYDER MARK HOWARD

IPC: G11C11/14 ,  G11C19/08 ,  H03K17/84 ,  H01F10/00

Abstract: SLM field access bubble devices which include at least one conductor crossing a bubble propagation path have severely limited operating margins (especially for small bubbles) for the bubble in the vicinity of the conductor. Apparatus and method for operating such a bubble device is disclosed which improves the device operation in this region. The improved apparatus and method provides an additional field source with a sense and magnitude to support the bubble when it reaches the conductor region. Such a field source, as disclosed, includes a current pulse in the conductor.