Bubble domain propagation using oscillating stripe domains
US4101972A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1977 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | May 20, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/0833
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus for and a method of propagating bubble domains along fixed guidance channel forming stripe domains by capturing them in moveable stripe domains and then moving the capturing moveable stripe domains. The memory plane comprises a non-magnetic Gadolinium Gallium Garnet (GGG) layer which is a supporting substrate upon which are successively formed by the liquid phase epitaxy (LPE) method: a first stripe domain layer, a first non-magnetic spacer layer; a bubble domain layer; a second non-magnetic spacer layer; a second stripe domain layer; and a third non-magnetic spacer layer upon which is formed the necessary propagation circuitry. The method of propagating the bubble domains involves forming fixed guidance channel forming stripe domains in the first stripe domain layer, orienting moveable stripe domains in the second stripe domain layer in a direction orthogonal to the direction of the fixed guidance channels, establishing bubble domains in the bubble domain layer at selected ones of each fixed guidance channel, moveable stripe domain intersection and finally oscillating the moveable stripe domains in a direction parallel to the fixed guidance channels by a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.