Misfit dislocations are known to accommodate disregistry at interfaces which separate crystals of different orientation and/or lattice parameter. Most studies of misfit dislocations have addressed epitaxial bicrystals in ‘parallel’ orientation relationships (OR), e.g, cube-on-cube in fee systems. Recent work, though, has demonstrated that non-parallel epitaxial ORs are energetically favored in some systems, e.g, (111)/(001) in fee systems of large misfit (∼12%). In these systems coexistence of equivalent variants of the same OR gives rise to ‘multivariant epitaxy’ wherein a film grows in a special polycrystalline form on a monocrystalline substrate. In this study we examine the accommodation of misfit in the special structures produced by multivariant epitaxy of (111)Ag on (001)Cu.
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