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Novel Tailor-Made Nanoferroelectric From Building Blocks

2010.12.22

A novel nanoferroelectric, an artificial superlattice assembled from perovskite nanosheets, was successfully developed by a solution-based bottom-up nanotechnology.
fig. 1

Fig. 1. An artificial superlattice assembled from perovskite nanosheets (A=Ca2Nb3O10, B=LaNb2O7). The success of growth of such well-controlled superlattices with a good interface quality enabled us to explore new properties of perovskite superlattices. By artificial structuring, the group found that the (LaNb2O7/Ca2Nb3O10) superlattice possesses a new form of interface coupling, which gives rise to ferroelectricity even at several nanometer thicknesses.

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Affiliations

Bao-Wen Li1, Minoru Osada1,2, Tadashi C. Ozawa1,2, Yasuo Ebina1,2, Kosho Akatsuka1,2, Renzhi Ma1,2, Hiroshi Funakubo3, Takayoshi Sasaki1,2
  1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science
  2. CREST, Japan Science and Technology Agency
  3. Department of Innovative and Engineered Materials, Tokyo Institute of Technology