Domain wall motion in perpendicularly magnetized wires having artificial antiferromagnetically coupled multilayers with engineered interfaces
US8687415B2 · kind B2 · utility
37Cited by
6References
44Claims
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Key dates
| Filing date | Jul 6, 2012 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Sep 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N50/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Magnetic wires that include two antiferromagnetically coupled magnetic regions show improved domain wall motion properties, when the domain walls are driven by pulses of electrical current. The magnetic regions preferably include Co, Ni, and Pt and exhibit perpendicular magnetic anisotropy, thereby supporting the propagation of narrow domain walls. The direction of motion of the domain walls can be influenced by the order in which the wire's layers are arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.