Temperature-dependent stability of supported five-fold twinned copper nanocrystals.
The temperature-dependent structure transition of supported Cu nanocrystals on SrTiO3(001)-(2 x 1) is investigated by scanning tunneling microscopy (STM). We experimentally determine the phase map of supported Cu icosahedral, decahedral, and truncated octahedral nanocrystal shapes as a function of substrate temperature during Cu deposition. We show that a supported nanocrystal of 8500 atoms at a nucleation temperature of 480 degrees C has the same probability of adopting an icosahedral or octahedral shape.
Silly
Fabien
F
Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK. fabien.silly@cea.fr
Castell
Martin R
MR