Self-assembled nanofilm of monodisperse cobalt hydroxide hexagonal platelets: Topotactic conversion into oxide and resistive switching

Renzhi Ma*, Minoru Osada, Linfeng Hu, Takayoshi Sasaki

*この研究の対応する著者

研究成果: Article査読

41 被引用数 (Scopus)

抄録

The current work develops a solution-based self-assembling route to construct close-packed nanofilms (thickness ̃ 30 nm) using monodisperse hexagonal platelets of Co(OH)2 as two-dimensional building blocks. The hydroxide film was postannealed and could be transformed into [111]-oriented cobalt monoxide (CoO) in a topotactic fashion retaining the original hexagonal platelet shape. Electrical resistive switching property of as-transformed CoO film was investigated, revealing a gigantic change in electrical resistance (ON/OFF current ratio: 103) and fast switching speed (ns level). This solution-based self-assembly procedure, in combination with a topotactic conversion from lamellar hydroxides to corresponding oxides, offers a new alternative to high-performance thin film devices based on transition metal oxide.

本文言語English
ページ(範囲)6341-6346
ページ数6
ジャーナルChemistry of Materials
22
23
DOI
出版ステータスPublished - 2010 12月 14
外部発表はい

ASJC Scopus subject areas

  • 材料化学
  • 化学工学(全般)
  • 化学 (全般)

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