Ultrahigh‐Density Arrays of Ferromagnetic Nanorings on Macroscopic Areas | Zendy

Zhu F. Q. | Zendy; Fan D. | Zendy; Zhu X. | Zendy; Zhu J.G. | Zendy; Cammarata R. C. | Zendy; Chien C.L. | Zendy

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Ultrahigh‐Density Arrays of Ferromagnetic Nanorings on Macroscopic Areas

Author(s) -

Zhu F. Q.,

Fan D.,

Zhu X.,

Zhu J.G.,

Cammarata R. C.,

Chien C.L.

Publication year - 2004

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.200400675

Subject(s) - materials science , vortex , area density , ferromagnetism , condensed matter physics , micromagnetics , nanoring , nanotechnology , process (computing) , magnetization , magnetic field , composite material , mechanics , physics , quantum mechanics , computer science , operating system

Arrays of ten billion Co nanorings , with inner diameters of 100 nm, wall widths of 20 nm, and of an ultrahigh areal density of 45 rings μm –2 , are fabricated on a macroscopic area. Magnetometric measurements and micromagnetic simulations reveal two parallel switching processes: a vortex reversal process and a rotating onion process.

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