ArticleScientific reports2018
Metastable phase formation of Pt-X (X = Ir, Au) thin films.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Electrochemical Evaluation of Polymer-Based Microelectrode Arrays: Analytical Performance on Oxygen and Hydrogen Peroxide.Sensors (Basel, Switzerland) · 2026Article
- Grain Boundaries Control Lithiation of Solid Solution Substrates in Lithium Metal Batteries.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Hybrid magnetron sputtering of ceramic superlattices for application in a next generation of combustion engines.Scientific reports · 2022Article
- Autonomous materials synthesis via hierarchical active learning of nonequilibrium phase diagrams.Science advances · 2021Article
- Role of Thermodynamics and Kinetics in the Composition of Ternary III-V Nanowires.Nanomaterials (Basel, Switzerland) · 2020Article
- Kinetically Limited Phase Formation of Pt-Ir Based Compositionally Complex Thin Films.Materials (Basel, Switzerland) · 2020Article
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7 authors.
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Abstract
The dependence of phase formation and mechanical properties on the chemical composition has been investigated for Pt-Ir and Pt-Au combinatorial thin films. The formation of a single, metastable Pt-Ir solid solution has been observed for all experimental compositions and temperatures. Upon Ir addition to Pt the experimentally determined changes in lattice parameter and Young's modulus display rule of mixture behavior which is in good agreement with our ab initio data. Whereas, in the Pt-Au system, the single metastable solid solution decomposes into two phases as the growth temperature is raised to ≥600 °C. The lattice parameters in the dual phase region are independent of chemical composition. The substrate temperature and chemical composition dependent phase formation in Pt-Ir and Pt-Au thin films can be rationalized based on CALPHAD (CALculation of PHAse Diagrams) results combined with estimations of the activation energy required for surface diffusion: The metastable phase formation during film growth is caused by kinetic limitations, where Ir atoms (in Pt-Ir) need to overcome an up to factor 6 higher activation energy barrier than Au (in Pt-Au) to enable surface diffusion.
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