Solution-based fabrication of perovskite nanosheet films and their dielectric properties

Bao Wen Li, Minoru Osada, Tadashi C. Ozawa, Renzhi Ma, Kosho Akatsuka, Yasuo Ebina, Hiroshi Funakubo, Shigenori Ueda, Keisuke Kobayashi, Takayoshi Sasaki

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We report a solution-based approach for fabricating perovskite nanofilms using a La0:95Nb2O7 perovskite nanosheet, a two-dimensional nanomaterial prepared by delaminating layered perovskite KLa0:95Nb2O7 into single-molecule-thick sheets. A layer-by-layer approach using Langmuir-Blodgett deposition was effective for fabricating uniform and highly dense nanofilms of perovskite nanosheets on an atomically flat SrRuO3 substrate. Structural analysis using X-ray diffraction, transmission electron microscopy, and hard X-ray photoelectron spectroscopy revealed that these films are composed of a well-ordered lamellar structure without an interfacial dead layer. The nanofilms showed stable dielectric response with εr ≃ 45 for thickness even down to 6nm.

Original languageEnglish
JournalJapanese Journal of Applied Physics
Volume48
Issue number9 Part 2
DOIs
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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