The structure of small, vapor-deposited particles. II. Experimental study of particles with hexagonal profile

M. J. Yacamán, K. Heinemann, C. Y. Yang, H. Poppa

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

"Multiply-twinned" gold particles with hexagonal bright field TEM profile were determined to be icosahedra composed of 20 identical and twin-related tetrahedral building units that do not have an fcc structure. The crystal structure of these slightly deformed tetrahedra is rhombohedral. Experimental evidence supporting this particle model was obtained by selected-zone dark field and weak beam dark field electron microscopy. In conjunction with the results of part I, it has been concluded that multiply- twinned gold particles of pentagonal or hexagonal profile that are found during the early stages of the vapor deposition growth process on alkali halide surfaces do not have an fcc crystal structure, which is in obvious contrast to the structure of bulk gold.

Original languageEnglish (US)
Pages (from-to)187-195
Number of pages9
JournalJournal of Crystal Growth
Volume47
Issue number2
DOIs
StatePublished - Aug 1979
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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