A structural analysis of small vapor-deposited "multiply twinned" gold particles

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

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

High resolution selected zone dark field, Bragg reflection imaging and weak beam dark field techniques of transmission electron microscopy were used to determine the structure of small gold particles vapor deposited on NaCl substrates. Attention was focused on the analysis of those in the 50-150 Å range that have pentagonal or hexagonal bright field profiles. These particles have been previously described as multiply twinned crystallites composed of face-centered cubic tetrahedra. The experimental evidence of the present studies can be interpreted on the assumption that the particle structure is a regular icosahedron or decahedron for the hexagonal or the pentagonal particles respectively. The icosahedron is a multiply twinned rhombohedral crystal and the decahedron is a multiply twinned body-centered orthorhombic crystal, each of which constitutes a slight distortion from the face-centered cubic structure.

Original languageEnglish (US)
Pages (from-to)163-168
Number of pages6
JournalThin Solid Films
Volume58
Issue number1
DOIs
StatePublished - Mar 15 1979
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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