کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
221074 | 463370 | 2006 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Magnetoresistive granular Cu–Co–Ni coatings prepared by electrodeposition Magnetoresistive granular Cu–Co–Ni coatings prepared by electrodeposition](/preview/png/221074.png)
Electrodeposition of Cu–Co–Ni coatings was performed from slightly acidic citrate–sulphate solutions. Bath composition and deposition potentials were varied in order to prepare copper-rich ternary coatings with different metal percentages. Low copper (II) and high nickel (II) concentrations were necessary to attain uniform non-dendritic electrodeposits with Co + Ni percentages between 10 and 30 wt%. Low magnetoresistive values were detected for as-deposited samples containing Co + Ni percentages around 25 wt%, although X-ray diffractograms showed miscibility of the three metals. The annealing of the samples at different temperatures led to granular coatings with the magnetoresistive values increase, as a consequence of the ferromagnetic metals segregation from within the non-magnetic matrix. Magnetic Force Microscopy (MFM) technique made possible to detect changes on the magnetic response between as-deposited and annealed samples.
Journal: Journal of Electroanalytical Chemistry - Volume 596, Issue 2, 1 November 2006, Pages 87–94