Domain alignment within ferroelectric/dielectric PbTiO$_3$/SrTiO$_3$ superlattice nanostructures

25 Feb 2020 Park J. Mangeri J. Zhang Q. Yusuf M. H. Pateras A. Dawber M. Holt M. V. Heinonen O. G. Nakhmanson S. Evans P. G.

The ferroelectric domain pattern within lithographically defined PbTiO3/SrTiO3 ferroelectric/dielectric heteroepitaxial superlattice nanostructures is strongly influenced by the edges of the structures. Synchrotron x-ray nanobeam diffraction reveals that the spontaneously formed 180{\deg} ferroelectric stripe domains exhibited by such superlattices adopt a configuration in rectangular nanostructures in which domain walls are aligned with long patterned edges... (read more)

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