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Combinatorial study of thermal stability in ternary nanocrystalline alloys

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Academic year: 2021

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Fig. 1. Workflow of study. Ternary libraries: For each system, PtAuAg and PtAuPd, two compositional libraries are fabricated using combinatorial co-sputtering to a film thickness of 2 m m, spanning a large section of the Pt-rich ternary composition space
Fig. 4. Gibbs triangle maps showing the compositional distribution (at.%) of extracted quantities for alloys in the PtAuAg system at 400°C (equivalent plots for PtAuAg AS, PtAuPd AS, and PtAuPd 400°C provided in Figs
Fig. 5. Comparing thermal stability between systems based on the primary grain size (D peak 1 ): (ac) Grain size distribution as-sputtered, after annealing at 400°C, and absolute grain size change D D peak 1 in the PtAuAg system: Grain sizes change by less
Fig. 6. Schematic summary of the two ternary stability types found in this study. The fully stable ternary type exhibits stable solute-segregated nanocrystalline structure across the full composition range, as it is built of two stable underlying  solvent-
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