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High Density Contiguous Bubble Device

IP.com Disclosure Number: IPCOM000069463D
Original Publication Date: 1978-Apr-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Lin, YS [+details]

Abstract

In bubble propagation structures other than the bubble lattice file, bubbles are spaced sufficiently far apart that interactions do not occur between adjacent bubbles. Typically, the spacing is 4-5 bubble diameters. However, in a contiguous disk bubble device, the presence of a magnetic charged wall provides the force which moves the bubble domains. The potential well provided by the charged wall is one to two orders of magnitude larger than the repelling force between adjacent bubble domains. This means that the contiguous disk device cell is less susceptible to adjacent bubble-bubble interaction than other types of bubble propagation structures. This is partly due to the influence of the charged walls and partly due to the confinement provided by the (non-ion implanted) disk patterns.