Thermal induced structural transformation of bimetallic AuPd nanoparticles

Electron Microscopy and Analysis Group Conference 2013

Bruma, A.^1 ; Li, Z.Y.^1

Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, B15 2TT, United Kingdom^1

关键词: Core shell structure;    HAADF-STEM;    High-angle-annular-dark-field scanning transmission electron microscopes;    Imaging analysis;    Physical vapour deposition;    Structural transformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/522/1/012079/pdf
DOI  :  10.1088/1742-6596/522/1/012079

来源: IOP

【 摘 要 】

High Angle Annular Dark Field Scanning Transmission Electron Microscope (HAADF-STEM) has been employed for the study of thermal effects of structural transformation of AuPd nanoparticles produced by physical vapour deposition. Depending on the duration of annealing at a temperature of 500 K, atomic resolved imaging analysis reveals the formation of various structure morphologies from the ordered L12superlattice to the core-shell structure. The effects of Pd-oxides are also discussed.