Abstract
Heteroepitaxial growth of Fe on the asymmetrical Cu(311) surface leads to (211)-oriented strained bcc films with a highly anisotropic morphology. In the initial stage the evolution of pseudomorphic Fe islands is observed: anisotropic lateral stress induces the formation of a regular array of Fe patches with a periodic separation. With proceeding growth, the overlayer transforms to bcc structure by means of dislocations introduced along the direction of dominant stress. The topography of the resulting bcc film corresponds to a regular faceted structure whose periodicity is determined by the arrangement of pseudomorphic islands formed in the initial stage of growth.
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