Advanced Materials

One-Nanometer-Thick Seed Layer of Unilamellar Nanosheets Promotes Oriented Growth of Oxide Crystal Films

Authors

  • T. Shibata,

    1. International Center for Materials Nanoarchitectonics and Nanoscale Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • K. Fukuda,

    1. International Center for Materials Nanoarchitectonics and Nanoscale Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • Y. Ebina,

    1. International Center for Materials Nanoarchitectonics and Nanoscale Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • T. Kogure,

    1. Dept Earth & Planetary Science, Graduate School of Science, University of Tokyo, Bunkyo, 7-3-1 Hongo, Tokyo 113-0033 (Japan)
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  • T. Sasaki

    1. International Center for Materials Nanoarchitectonics and Nanoscale Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • This work was supported by CREST of the Japan Science and Technology Agency (JST). Supporting Information is available online from Wiley InterScience or from the author.

Abstract

Room-temperature fabrication of an ultimately thin seed layer using 2D oxide nanosheets is demonstrated. Flat nanosheets are tiled to form a highly organized monolayer with a thickness of ca. 1 nm on a glass substrate (see figure). Monolayer films of nanosheets such as Ca2Nb3O10 (2D square lattice) and MnO2 (2D hexagonal) successfully promote oriented film growth of oxide crystals such as SrTiO3 (cubic), TiO2 (tetragonal), and ZnO (hexagonal).

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