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Quadrupole Magnetic Bubble Domain Storage

IP.com Disclosure Number: IPCOM000053218D
Original Publication Date: 1981-Sep-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Almasi, GS [+details]

Abstract

In magnetic bubble domain memories, the density of information stored i dependent upon bubble-bubble interactions in many systems. For example, when discrete bubble domain devices, such as T and C bar devices, are used, the bit density is limited by the interaction between bubbles, which makes it necessary to keep the bubbles separated by about four bubble diameters. In a bubble lattice file, the bubbles are packed more closely together, but at the cost of considerably more complicated devices. This invention provides a technique for reducing the interaction forces between bubble domains so that they can be packed more closely together without added complication. To do so, bubble domains are configured as quadrupole domains.