Magnetic vortex racetrack memory

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:423

Article

Geng, Liwei D.¹  Jin, Yongmei M.¹ 

[1] Michigan Technol Univ, Mat Sci & Engn Dept, Houghton, MI 49931 USA

关键词: Magnetic vortex;    Magnetic nanowire;    Micromagnetic simulation;    Magnetic racetrack memory;   

DOI  :  10.1016/j.jmmm.2016.09.062

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

Free