Process for transferring bloch lines formed in a magnetic wall of a magnetic domain, and a magnetic memory apparatus for recording and reproduction of information by transferring bloch lines in utilizing said transferring process
US4974201A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1987 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/0841
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A process for transferring Bloch lines formed in a magnetic wall of a magnetic domain and a magnetic memory apparatus for recording/reproducing information in utilizing Bloch lines formed in the magnetic wall of the magnetic domain as a information carrier are disclosed. The process comprises steps of forming a positive or negative magnetic charge area in the magnetic wall, thereby attaching a Bloch line to the area, and moving the magnetic charge area, thereby moving the Bloch line. The apparatus comprises a memory substrate having a stripe-shaped magnetic domain, a way to write Bloch lines in the magnetic wall of the stripe-shaped magnetic domain according to input information, a way to read the Bloch lines so stored to reproduce the information in the form of electric signals and a way to apply a rotating magnetic field parallel to the plane of the memory substrate, to the stripe-shaped magnetic domain, to move the Bloch lines along the magnetic wall. As a result, the Bloch lines so written are transferred in succession to another location in the domain or to a read-out area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.