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Relevant GMR in as-deposited Co-Ag electrodeposits: Chronoamperometric preparation

Garcia-Torres, J, Vallés, E and Gómez, E (2010) Relevant GMR in as-deposited Co-Ag electrodeposits: Chronoamperometric preparation Journal of Physical Chemistry C, 114 (28). pp. 12346-12354.

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Abstract

Electrodeposited Co-Ag granular films were prepared by potentiostatic deposition from a chloride-based electrolyte. Different Co(II)/Ag(I) ratios were tested to study the influence of the composition bath on the magnetotranport properties. All as-deposited samples showed GMR effect because both longitudinal and transverse magnetoresistances were negative in the whole field range. GMR values up to 5.85% were measured at room temperature. Electrochemical and structural techniques (XRD, TEM, and electron diffraction) as well as magnetoresistance measurements confirmed the heterogeneity of the deposits with a size distribution from superparamagnetic to ferromagnetic particles. Fcc-Ag and a mixture of hcp-Co and fcc-Co were present in the coatings. An analysis of the magnetotransport properties based on the decomposition of the total magnetoresistance into its ferromagnetic and superparamagnetic contributions revealed a high superparamagnetic contribution in all samples. © 2010 American Chemical Society.

Item Type: Article
Authors :
NameEmailORCID
Garcia-Torres, JUNSPECIFIEDUNSPECIFIED
Vallés, EUNSPECIFIEDUNSPECIFIED
Gómez, EUNSPECIFIEDUNSPECIFIED
Date : 22 July 2010
Identification Number : https://doi.org/10.1021/jp104412c
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/838857

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