Nanomagnetic domains of chromium deposited on vertically-aligned carbon nanotubes

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:324

Article

Wright, Andrew C.¹  Faulkner, Michael K.²  Harris, Robert C.³  Goddard, Alex³  Abbott, Andrew P.³ 

[1] GlyndwrUniv, Mat Sci Res Ctr, Adv Mat Res Lab, Wrexham LL11 2AW, Wales

[2] Univ Manchester, Manchester Mat Sci Ctr, Manchester M13 9PL, Lancs, England

[3] Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England

关键词: Nanomagnet;    Carbon;    Nanotube;    Electrodeposition;    Chromium;   

DOI  :  10.1016/j.jmmm.2012.07.044

来源: Elsevier

【 摘 要 】

The drive to create ever smaller magnetic memory devices has led to the development of new nanomagnetic domains on surfaces. This paper reports the development of nano-chromium magnetic domains obtained using electrodeposition on vertically aligned carbon nanofibers arrays. Attempts to achieve this using conventional aqueous solutions were unsuccessful even after thin nickel underlayers were applied. The use of a novel electrolyte, a deep eutectic solvent, made from choline chloride: chromium (III) chloride enabled highly conformal overcoatings of chromium on individual bare carbon nanotubes to be obtained. Very high aspect ratio metal microstructures could be obtained by this novel technology. Magnetic imaging of the coated nanoarrays showed there to be clear magnetic character to the coating when the thin coatings were applied but this disappeared when the deposits were thicker and more contiguous. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

Free