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Title: Atomic structure and bonding of the interfacial bilayer between Au nanoparticles and epitaxially regrown MgAl{sub 2}O{sub 4} substrates

A unique metal/oxide interfacial bilayer formed between Au nanoparticles and MgAl{sub 2}O{sub 4} substrates following thermal treatment is reported. Associated with the formation of the bilayer was the onset of an abnormal epitaxial growth of the substrate under the nanoparticle. According to the redistribution of atoms and the changes of their electronic structure probed across the interface by a transmission electron microscopy, we suggest two possible atomic models of the interfacial bilayer.
Authors:
 [1] ;  [2] ; ;  [3] ;  [4] ; ;  [5]
  1. State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240 (China)
  2. (Canada)
  3. Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1 (Canada)
  4. School of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
  5. Canadian Centre of Electron Microscopy and Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1 (Canada)
Publication Date:
OSTI Identifier:
22395458
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINATES; ATOMIC MODELS; ATOMS; BONDING; CRYSTAL GROWTH; ELECTRONIC STRUCTURE; EPITAXY; GOLD; HEAT TREATMENTS; INTERFACES; LAYERS; MAGNESIUM COMPOUNDS; NANOPARTICLES; PROBES; SUBSTRATES; TRANSMISSION ELECTRON MICROSCOPY