We have investigated the structure and morphology of self-assembled iron nanocrystals supported on a SrTiO3(001)-c(4×2) substrate using scanning tunneling microscopy. Nanocrystals with a truncated pyramid shape were imaged, which result from the epitaxial growth of bcc Fe on SrTiO3(001). By using the dimensions of the nanocrystal facets at equilibrium and an energy minimization calculation, we obtain the adhesion energy γadh=(3.05±0.15)J∕m2 for bcc Fe on SrTiO3(001)-c(4×2).
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Silly et al. (2005) studied this question.
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