Magnetic confinement and coupling in narrow-diameter Au-Ni nanowires

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:379

Article

Schelhas, Laura T.¹  Banholzer, Matthew J.^2,3  Mirkin, Chad A.^2,3  Tolbert, Sarah H.^1,4,5 

[1] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Int Inst Nanotechnol, Evanston, IL 60208 USA

[4] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[5] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

关键词: Nano-magnets;    Anodic alumina;    AAO;    Ni-Au nanowires;    Shape anisotropy;   

DOI  :  10.1016/j.jmmm.2014.12.049

来源: Elsevier

【 摘 要 】

Here we examine magnetic coupling in layered magnetic/nonmagnetic nanowires created using electrochemical deposition into nanoporous templates. By utilizing reproducible and tunable deposition methods, various aspect ratios and spacing between magnetic domains were created. Low aspect ratio disks were then coupled to high aspect ratio rods to control the mechanism for spin Hip in the disk component of the system. The orthogonal relationship between the magnetic easy axis of the disk and rod geometries creates a multistate system with both in-plane and out-of-plane easy axes by balancing magnetic shape anisotropy with dipole coupling between the two layers. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free