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Measurement of the giant magnetoresistance effect in cobalt-silver magnetic nanostructures: Nanowires

Garcia-Torres, J, Gómez, E and Vallés, E (2012) Measurement of the giant magnetoresistance effect in cobalt-silver magnetic nanostructures: Nanowires Journal of Physical Chemistry C, 116 (22). pp. 12250-12257.

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Abstract

Arrays of cobalt (Co) and cobalt-silver (Co-Ag) nanowires have been prepared by electrodeposition using polycarbonate membranes as templates. Scanning electron microscopy characterization revealed a parallel growth of both types of nanowires with constant length. X-ray and electron diffraction patterns showed that cobalt nanowires were grown with hcp (hexagonal close-packed) structures, but different preferred orientations were obtained depending on the diameter: (110), (100), and (002) directions for nanowires with diameters 200, 100, and 50 nm, respectively. The structural differences were reflected on the magnetic response of the nanowires. On the other hand, the structural characterization of Co-Ag nanowires revealed the hcp and fcc (face-centered cubic) structure for cobalt and silver, respectively. The heterogeneous nature of the Co-Ag nanowires was evidenced by transmission electron microscopy. Giant magnetoresistance values as high as 0.5% were measured at room temperature. © 2012 American Chemical Society.

Item Type: Article
Authors :
NameEmailORCID
Garcia-Torres, JUNSPECIFIEDUNSPECIFIED
Gómez, EUNSPECIFIEDUNSPECIFIED
Vallés, EUNSPECIFIEDUNSPECIFIED
Date : 7 June 2012
Identification Number : 10.1021/jp300119w
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:20
Last Modified : 17 May 2017 13:20
URI: http://epubs.surrey.ac.uk/id/eprint/838849

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