Magnetic vortex racetrack memory
| Autor: | Liwei D. Geng, Yongmei M. Jin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed matter physics Nanowire 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Power (physics) Vortex Core (optical fiber) Domain wall (magnetism) 0103 physical sciences Racetrack memory 010306 general physics 0210 nano-technology Ultrashort pulse Polarity (mutual inductance) |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 423:84-89 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2016.09.062 |
| Popis: | We report a new type of racetrack memory based on current-controlled movement of magnetic vortices in magnetic nanowires with rectangular cross-section and weak perpendicular anisotropy. Data are stored through the core polarity of vortices and each vortex carries a data bit. Besides high density, non-volatility, fast data access, and low power as offered by domain wall racetrack memory, magnetic vortex racetrack memory has additional advantages of no need for constrictions to define data bits, changeable information density, adjustable current magnitude for data propagation, and versatile means of ultrafast vortex core switching. By using micromagnetic simulations, current-controlled motion of magnetic vortices in cobalt nanowire is demonstrated for racetrack memory applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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