Stability of the electrodeposition process for CoPt alloy formation

O. Berkh, Y. Shacham-Diamand, E. Gileadi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The stability of the process for electrodeposition of CoPt alloys from ammonium citrate electrolytes containing [Pt(NO2)2(NH 3)2]0 as the source of Pt was studied. Voltammetric monitoring of the anodic oxidation of the electrolyte and deposition of CoPt on the cathode showed the effect of the changes of the nature of the Pt complex on the performance of the plating bath. Anodic oxidation of the Pt complex was shown to involve mainly the oxidation of NO2 - and to some extent NH3 ligands. The cathodic process is accompanied by reduction of free NO2- The reduction of this anion in the bound form is highly inhibited. In contrast, its oxidation at the anode proceeds almost as readily in the bound form as that in the free form.

Original languageEnglish
Pages (from-to)1275-1283
Number of pages9
JournalJournal of Applied Electrochemistry
Volume38
Issue number9
DOIs
StatePublished - Sep 2008

Funding

FundersFunder number
Office of the Chief Scientist, Ministry of Economy

    Keywords

    • Alloy deposition
    • Bath stability
    • CoPt alloys
    • Magnetic alloys
    • Metal-films

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