Journal
ADVANCED MATERIALS
Volume 19, Issue 18, Pages 2460-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200601357
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Bicolor oxide superlattices with one- and two-unit-cell layer thickness (see figure) are explored by advanced synthesis, characterization, and first-principles calculation. Experimentally, enhanced ferroelectric polarization is observed for the superlattice of which chemical composition lies beyond the solubility limit. Theoretical analyses reveal that ferroelectric corrugation occurs in a paraelectric layer in the superlattice and plays important roles in both stabilization and enhancement of ferroelectricity.
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