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Influence of precursor concentration on surface morphology and phase structure of iridium-palladium binary alloy
1IMEN, UKM, Bangi, Selangor, Malaysia
2Computing, Universiti Tenaga Nasional , Kajang, Selangor, Malaysia
*Email Address : mohd.yusri@ukm.my
Abstract : Iridium-palladium alloy films have been prepared on ITO substrate via liquid phase deposition technique (LPD) technique. The concentration of dedocyl sulfate (SDS) and formic acid (FA) have been varied in order to investigate the effect of these precursor concentrations on the morphology and structure of iridium-palladium (Ir-Pd) alloy. The morphological shape for the samples with variation of concentration of both precursors is cauliflower. Also for both variations, the dominant peak of Ir-Pd present in the sample which is verified by XRD analysis. The diameter and coverage area of Ir-Pd increase with the SDS concentration until the optimum value of 0.10 M. While the diameter and coverage area of Ir-Pd keep on increasing with FA concentration without the optimum concentration has been found. The I200/I111 does not neither increase nor increase with SDS concentration but the I220/I111 increases with the concentration up to the optimum concentration of 0.10 M. However, both I200/I111 and I220/I111 keep on increasing with concentration of FA.
Keywords : binary alloy, iridium, morphology, palladium, structural properties