Magnetic memory coincident thermal pulse data storage
US6535416B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Apr 23, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/3268
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ferromagnetic thin-film based digital memory (FIG. 1) having in a bit structure (17,17′) a coupled moment material film (13,14,14′,14″) in which magnetic moments of adjacent atoms, ions or molecules are coupled to one another to maintain some alignment thereof below a critical temperature above which such alignment is not maintained, and also having a plurality of word line structures (20) each located across from the coupled moment material film (13,14,14′,14″) in a corresponding one of the bit structures (17,17′). The bit structures (17,17′) are sufficiently thermally isolated to allow currents in the adjacent word lines (20) and/or the bit structure (17,17′) to heat the bit structure (17,17′) to approach the critical temperature which may be supplied coincidently and then reduced to cool the bit structure (17,17′) while supplying a magnetic field during the cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.