Artificial design for new ferroelectrics using nanosheet-architectonics concept

Yoon Hyun Kim, Lei Dong, Minoru Osada, Bao Wen Li, Yasuo Ebina, Takayoshi Sasaki

    研究成果: Article

    7 引用 (Scopus)

    抄録

    Control over the emergence of ferroelectric order remains a fundamental challenge for the rational design of artificial materials with novel properties. Here we report a new strategy for artificial design of layered perovskite ferroelectrics by using oxide nanosheets (high-k dielectric Ca<inf>2</inf>Nb<inf>3</inf>O<inf>10</inf> and insulating Ti<inf>0.87</inf>O<inf>2</inf>) as a building block. We approached the preparation of superlattice films by a layer-by-layer assembly involving Langmuir-Blodgett deposition. The artificially fabricated (Ti<inf>0.87</inf>O<inf>2</inf>/Ca<inf>2</inf>Nb<inf>3</inf>O<inf>10</inf>)<inf>2</inf>(Ti<inf>0.87</inf>O<inf>2</inf>) superlattices are structurally unique, which is not feasible to create in the bulk form. By such an artificial structuring, we found that (Ti<inf>0.87</inf>O<inf>2</inf>/Ca<inf>2</inf>Nb<inf>3</inf>O<inf>10</inf>)<inf>2</inf>(Ti<inf>0.87</inf>O<inf>2</inf>) superlattices possess a new form of interface coupling, which gives rise to ferroelectricity with a good fatigue-free characteristic. Considering the flexibility of self-assembled nanosheet interfaces, this technique provides a route to synthesize a new kind of layered ferroelectric oxides.

    元の言語English
    記事番号244001
    ジャーナルNanotechnology
    26
    発行部数24
    DOI
    出版物ステータスPublished - 2015 6 19

    Fingerprint

    Nanosheets
    Ferroelectric materials
    Superlattices
    Oxides
    Ferroelectricity
    Perovskite
    Fatigue of materials

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Electrical and Electronic Engineering
    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)

    これを引用

    Kim, Y. H., Dong, L., Osada, M., Li, B. W., Ebina, Y., & Sasaki, T. (2015). Artificial design for new ferroelectrics using nanosheet-architectonics concept. Nanotechnology, 26(24), [244001]. https://doi.org/10.1088/0957-4484/26/24/244001

    Artificial design for new ferroelectrics using nanosheet-architectonics concept. / Kim, Yoon Hyun; Dong, Lei; Osada, Minoru; Li, Bao Wen; Ebina, Yasuo; Sasaki, Takayoshi.

    :: Nanotechnology, 巻 26, 番号 24, 244001, 19.06.2015.

    研究成果: Article

    Kim, YH, Dong, L, Osada, M, Li, BW, Ebina, Y & Sasaki, T 2015, 'Artificial design for new ferroelectrics using nanosheet-architectonics concept', Nanotechnology, 巻. 26, 番号 24, 244001. https://doi.org/10.1088/0957-4484/26/24/244001
    Kim, Yoon Hyun ; Dong, Lei ; Osada, Minoru ; Li, Bao Wen ; Ebina, Yasuo ; Sasaki, Takayoshi. / Artificial design for new ferroelectrics using nanosheet-architectonics concept. :: Nanotechnology. 2015 ; 巻 26, 番号 24.
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