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Evolution of magnetic and structural properties from Ag nanolayers to several microns Co-Ag deposits prepared by electrodeposition

Garcia-Torres, J, Gómez, E and Vallés, E (2009) Evolution of magnetic and structural properties from Ag nanolayers to several microns Co-Ag deposits prepared by electrodeposition Journal of Electroanalytical Chemistry, 635 (2). pp. 63-68.

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Abstract

The evolution of composition, morphology, magnetic properties and crystalline structure of Co-Ag electrodeposits from nanometric to micrometric thicknesses has been analyzed. Different substrates (Si/Ti/Ni, Si/Cr/Cu and glass/ITO) have been used to electrodeposit the Co-Ag system. The same trend was observed in all cases: after a first nanometric silver layer, cobalt was gradually incorporated till constant composition was attained. Moreover, a gradual variation of the magnetic response of the films from diamagnetism to superparamagnetism and then ferromagnetism was detected by increasing the deposition charge. fcc-Ag, hcp-Co and a metastable phase hcp-CoAg3 were present in Co-Ag micrometric deposits grown over Si/Ti/Ni from the very early deposition stages, these deposits showing coercivity values around 115 Oe. However, deposits of lower coercivities (around 50 Oe) were obtained over glass/ITO and Si/Cr/Cu substrates, these deposits being constituted by fcc-Ag and hcp-Co. © 2009 Elsevier B.V. All rights reserved.

Item Type: Article
Authors :
NameEmailORCID
Garcia-Torres, JUNSPECIFIEDUNSPECIFIED
Gómez, EUNSPECIFIEDUNSPECIFIED
Vallés, EUNSPECIFIEDUNSPECIFIED
Date : 15 October 2009
Identification Number : 10.1016/j.jelechem.2009.08.003
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/838859

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