Atomic level imaging of Au nanocluster dispersed in TiO2 and SrTiO3

C. M. Wang, V. Shutthanandan, Y. Zhang, S. Thevuthasan, L. E. Thomas, W. J. Weber, G. Duscher

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Au nanoclusters dispersed in single crystal TiO2 and SrTiO 3 have been prepared by ion implantation at 300 and 975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high angle annular-dark-field (HAADF) imaging in an aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the dispersed gold nanoclusters. The results indicate that Au atoms substitute for cations in these systems. Cavities of up to several tens of nanometers are observed in TiO2 and SrTiO 3. The nanometer-sized cavities and Au clusters are faceted along the same lattice plane of the matrix, indicating that the interfacial energy (defined by the Au cluster and the matrix) and the surface energy of the matrix (defined by the cavity and the matrix) follow a similar trend of change with respect to different lattice planes of the matrix.

Original languageEnglish
Pages (from-to)380-382
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume242
Issue number1-2
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

Fingerprint

Nanoclusters
nanoclusters
Interfacial energy
Imaging techniques
matrices
High resolution transmission electron microscopy
Aberrations
Ion implantation
Gold
Cations
Electron microscopes
Positive ions
cavities
Single crystals
Annealing
Scanning
Atoms
Microstructure
interfacial energy
surface energy

Keywords

  • Au nanoclusters
  • Cavity
  • HRTEM
  • Ion implantation
  • SrTiO
  • TiO

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

Atomic level imaging of Au nanocluster dispersed in TiO2 and SrTiO3. / Wang, C. M.; Shutthanandan, V.; Zhang, Y.; Thevuthasan, S.; Thomas, L. E.; Weber, W. J.; Duscher, G.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 242, No. 1-2, 01.2006, p. 380-382.

Research output: Contribution to journalArticle

Wang, C. M. ; Shutthanandan, V. ; Zhang, Y. ; Thevuthasan, S. ; Thomas, L. E. ; Weber, W. J. ; Duscher, G. / Atomic level imaging of Au nanocluster dispersed in TiO2 and SrTiO3. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2006 ; Vol. 242, No. 1-2. pp. 380-382.
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