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

Journal Article · Mon Dec 08 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4902939· OSTI ID:22395458

Zhu, Guo-zhen ^[1]; Majdi, Tahereh; Preston, John S. ^[2]; Shao, Yang ^[3]; Bugnet, Matthieu

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1. State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240 (China)
2. Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1 (Canada)
3. School of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)

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.

• OSTI ID: 22395458
• Journal Information: Applied Physics Letters, Vol. 105, Issue 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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