Self-Organized Growth of Nanoparticles on a Surface Patterned by a Buried Dislocation Network
arXiv:0707.3274 · doi:10.1103/PhysRevLett.95.185501
Abstract
The self-organized growth of Co nanoparticles with 10 nm periodicity was achieved at room temperature on a Ag(001) surface patterned by an underlying dislocation network, as shown by real time, in situ Grazing Incidence Small and Wide Angle X-ray Scattering. The misfit dislocation network, buried at the interface between a 5nm-thick Ag thin film and a MgO(001) substrate, induces a periodic strain field on top of the surface. Nucleation and growth of Co on tensile areas are found as the most favorable sites as highlighted by Molecular Dynamic simulations.
15 pages, 4 figures