Anisotropic magnetoresistance as a probe of magnetization reversal in individual nono-sized nickel wires

Author

Wegrowe, J.E. ; Gilbert, S.E. ; Kelly, D. ; Doudin, B. ; Ansermet, J. Ph

Author_Institution

Inst. of Exp. Phys., Fed. Inst. of Technol., Lausanne, Switzerland

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

903

Lastpage

905

Abstract

Magnetization reversal of individual Ni nanowires has been studied by anisotropic magnetoresistance (AMR) measurements. The wires are homogeneous cylinders 6μ long and averaging 80 nm in diameter. Nanowires were produced by electrodeposition in track-etched membrane templates. Electrical contacts to as-deposited single nanowires were obtained by a novel in-situ method where contact to a single wire is accomplished automatically and reliably during electrodeposition. Steps of the magnetoresistance are detected, corresponding to irreversible switching of the magnetization in a single wire. The dependence of the switching field on the orientation of the applied field as seen by AMR is identical to that recently observed by using micro-SQUID techniques

Keywords

electrodeposition; ferromagnetic materials; magnetisation reversal; magnetoresistance; nanostructured materials; nickel; 6 mum; 80 nm; Ni; anisotropic magnetoresistance; electrodeposition; individual nono-sized Ni wires; irreversible switching; magnetization reversal; track-etched membrane templates; Anisotropic magnetoresistance; Biomembranes; Electrodes; Magnetic anisotropy; Magnetization reversal; Nanowires; Nickel; Perpendicular magnetic anisotropy; Probes; Wires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706306

Filename

706306