High-temperature dielectric responses of molecularly-thin titania nanosheet

Yoon Hyun Kim, Minoru Osada, Lei Dong, Hyung Jun Kim, Takayoshi Sasaki

    研究成果: Article

    3 引用 (Scopus)

    抄録

    We have investigated high-temperature dielectric properties of titania nanosheet (Ti<inf>0.87</inf>O<inf>2</inf>), a new class of high-κ nanomaterials derived from the exfoliation of layered compounds. In-situ characterizations using atomic force microscopy indicate a robust insulating property in a monolayer form of Ti<inf>0.87</inf>O<inf>2</inf> nanosheets even at 200°C. Furthermore, layer-by-layer assembled nanocapacitors exhibit both size-free high-ε<inf>r</inf> characteristic (∼120) and high insulation resistance (∼10<sup>-7</sup> A/cm<sup>2</sup>) at high temperatures up to 250°C. The simultaneous improvement of ε<inf>r</inf> and thermal stability in high-κ nanodielectrics is of critical importance for applications of high-temperature capacitors.

    元の言語English
    ページ(範囲)335-339
    ページ数5
    ジャーナルNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
    123
    発行部数1437
    DOI
    出版物ステータスPublished - 2015

    Fingerprint

    Nanosheets
    titanium
    Titanium
    Nanostructured materials
    insulation
    Dielectric properties
    Temperature
    dielectric properties
    Insulation
    Monolayers
    Atomic force microscopy
    capacitors
    Thermodynamic stability
    Capacitors
    thermal stability
    atomic force microscopy
    titanium dioxide

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry
    • Chemistry(all)
    • Condensed Matter Physics

    これを引用

    High-temperature dielectric responses of molecularly-thin titania nanosheet. / Kim, Yoon Hyun; Osada, Minoru; Dong, Lei; Kim, Hyung Jun; Sasaki, Takayoshi.

    :: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, 巻 123, 番号 1437, 2015, p. 335-339.

    研究成果: Article

    Kim, Yoon Hyun ; Osada, Minoru ; Dong, Lei ; Kim, Hyung Jun ; Sasaki, Takayoshi. / High-temperature dielectric responses of molecularly-thin titania nanosheet. :: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan. 2015 ; 巻 123, 番号 1437. pp. 335-339.
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    AU - Sasaki, Takayoshi

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