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Classical molecular dynamics is used to investigate the equilibrium state of the surface region and interface of heteroepitaxial La 2 O 3 thin films. Due to the lattice mismatch, heteroepitaxial thin films are subject to very large stress. For this reason the behavior of La 2 O 3 thin films at SiO 2 interface becomes an important concern. Our result indicates...
Classical molecular dynamics was used to investigate the equilibrium state of the surface region of as-grown La2O3. It is currently thought that bulk and epitaxial thin film La2O3 surfaces exhibit amorphous structures in the as-prepared state that yield bulk crystal states upon postdeposition annealing. The focus of the study is to determine if the as-prepared surface region of La2O3 is purely amorphous...
A study of faceting of the O/Ir(210) surface has been conducted using scanning tunneling microscopy (STM). Three-sided nanometer-scale pyramids with {311} and (110) facets are found to cover the surface uniformly in the entire range of facet formation and growth temperatures. The {311} facets are smooth and unreconstructed. The (110) facets consist of unreconstructed terraces and restructured areas...
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