Spintronic oscillator, and use thereof in radiofrequency devices
US9461586B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 12, 2012 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jul 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/26
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator is provided including a nanopillar and current injector for injecting a power supply current through the nanopillar, the nanopillar including at least one pattern including first and second layers made from a ferromagnetic material separated from each other by an intermediate layer made from a non-magnetic material. Each of the first and second ferromagnetic layers is prepared such that its remanent magnetic configuration corresponds to a vortex configuration and the polarity of the vortex core of the first layer is opposite the polarity of the vortex core of the second layer. The intermediate layer can allow repellant magnetic coupling between the two vortices of the first and second layers, for a zero intensity of the power supply current and a zero amplitude of the outside magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.