Atomic level imaging of Au nanocluster dispersed in TiO2 and SrTiO3

Journal Article · Sun Jan 01 04:00:00 EST 2006 · Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 242(1-2):380-382

DOI:https://doi.org/10.1016/j.nimb.2005.08.144· OSTI ID:876839

Wang, Chong M; Shutthanandan, V; Zhang, Yanwen; Thevuthasan, Suntharampillai; Thomas, L E; Weber, William J; Duscher, Gerd

Au nanoclusters dispersed in single crystal TiO2 and SrTiO3 have been prepared by ion implantation at 300 and 975 K and subsequent annealing at 1275 K for 10 hours. 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 SrTiO3. 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 cavity and the matrix ) follow a similar trend of change with respect to different lattice planes of the matrix.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 876839
• Report Number(s): PNNL-SA-46298; 3448; KC0201020; KP1303000
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 242(1-2):380-382, Journal Name: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 242(1-2):380-382 Journal Issue: 1-2 Vol. 242
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
ATOMS
CATIONS
CAVITIES
ELECTRON MICROSCOPES
Environmental Molecular Sciences Laboratory
GOLD
ION IMPLANTATION
MICROSTRUCTURE
MONOCRYSTALS
RESOLUTION
SURFACE ENERGY
TRANSMISSION ELECTRON MICROSCOPY