Gold-platinum alloys and Vegard's law on the nanoscale

L. Leppert*, R. Q. Albuquerque, S. Kümmel

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
8 Downloads (Pure)

Abstract

The structure of gold-platinum nanoparticles is heavily debated as theoretical calculations predict core-shell particles, whereas x-ray diffraction experiments frequently detect randomly mixed alloys. By calculating the structure of gold-platinum nanoparticles with diameters of up to ≈3.5 nm and simulating their x-ray diffraction patterns, we show that these seemingly opposing findings need not be in contradiction: Shells of gold are hardly visible in usual x-ray scattering, and the interpretation of Vegard's law is ambiguous on the nanoscale.

Original languageEnglish
Article number241403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number24
DOIs
Publication statusPublished - 17 Dec 2012
Externally publishedYes

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