Replicate/transfer bubble domain switch
AssigneeRockwell International Corporation
InventorIsoris S. Gergis
Life of this patent
Estimating the term…
Abstract
An active replicate/transfer magnetic bubble domain switch which is especially compatible with gap tolerant structures is provided. The switch includes a broadfaced corner element of relatively massive structure which retains the bubble domain for more than one field cycle. The switch characteristics are superior to those of existing switches both at the 8 .mu.m and 16 .mu.m periods. The switch offers the advantages of good bias and phase margins, ease of fabrication and reduced drive field requirements. In the 8 .mu.m, version the device requires a substantially lower drive field than the pickax design by virtue of reduced bubble-bubble interaction in the minor loops.
Claims15
An active replicate/transfer switch for magnetic bubble domain systems comprising:
- first and second propagation path means;
- corner element means included in said first propagation path means;
- conductor means disposed adjacent a side of said corner element means so as to define a loop which is substantially perpendicular to said side, the apex of the loop being disposed under said corner element;
- said corner element means having a pair of pole ends;
- said pole ends spaced apart and arranged substantially normal to each other such that a bubble domain can propagate around the periphery of said corner element means for more than one full cycle of the applied rotating magnetic field.
A magnetic bubble domain system comprising:
- a plate of magnetic material capable of supporting magnetic bubble domains, including a first path for transporting domains comprising a plurality of spaced apart magnetically operative discrete elements, and a current conductor;
- said first path including a corner element, including a first pole end portion, a second portion adjacent and substantially normal to said first pole end portion, a third portion adjacent and substantially normal to said second portion, and a second pole end portion adjacent and substantially normal to said third portion;
- said current conductor comprising a loop having an apex disposed substantially under said second portion of said corner element.
Dependencies are inferred from the claim text.