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. 2016 Feb 9;6:20536. doi: 10.1038/srep20536

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Copyright © 2016, Macmillan Publishers Limited

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HAADF image of Au_0.5Pt_0.5 NPs on Y:ZrO₂ (100) after annealing for 22 h at 400 °C in (a) atmosphere and (b) CO₂ (both 435 mbar). The samples shown in the EDX linescans (red arrow indicates the scanning direction) were annealed under (c) atmosphere or (d) CO₂. They do not show any phase segregation of Au and Pt atoms after the aging process.