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Study on Anomalous Codeposition Phenomenon of CoNi Magnetic Films
Journal of Magnetics, Volume 22, Number 2, 30 Jun 2017, Pages 175-180
Abstract
CoNi alloy films prepared from electrolytes with various concentrations of cobalt ions were studied in the paper. Influences of different cobalt ions concentrations on electrochemistry processes, components, microstructures, surface morphologies and magnetic properties of CoNi films were investigated. It was found that CoNi film plating was a kind of anomalous codeposition process. The percentage of cobalt content in CoNi films was higher than that of in the electrolyte. Moreover, with the rise of cobalt ions concentrations, the percentage of cobalt content in the samples increased gradually. CoNi films possessed crystal structures with four stronger diffraction peaks. However, CoNi films prepared from bath with higher cobalt ions possessed hcp structures which contributed to dendrite structures resulting in the increase of coercivity.
Keywords: CoNi films; anomalous codeposition; Coercivity
DOI: https://doi.org/10.4283/JMAG.2017.22.2.175
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