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 journalArticle

23 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

Fingerprint

Nanosheets
Dielectric properties
Perovskite
dielectric properties
Fabrication
fabrication
delaminating
structural analysis
Lamellar structures
x rays
Nanostructured materials
Structural analysis
photoelectron spectroscopy
transmission electron microscopy
X ray photoelectron spectroscopy
Transmission electron microscopy
diffraction
X ray diffraction
Molecules
molecules

ASJC Scopus subject areas

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

Cite this

Li, B. W., Osada, M., Ozawa, T. C., Ma, R., Akatsuka, K., Ebina, Y., ... Sasaki, T. (2009). Solution-based fabrication of perovskite nanosheet films and their dielectric properties. Japanese Journal of Applied Physics, 48(9 Part 2). https://doi.org/10.1143/JJAP.48.09KA15

Solution-based fabrication of perovskite nanosheet films and their dielectric properties. / Li, Bao Wen; Osada, Minoru; Ozawa, Tadashi C.; Ma, Renzhi; Akatsuka, Kosho; Ebina, Yasuo; Funakubo, Hiroshi; Ueda, Shigenori; Kobayashi, Keisuke; Sasaki, Takayoshi.

In: Japanese Journal of Applied Physics, Vol. 48, No. 9 Part 2, 2009.

Research output: Contribution to journalArticle

Li, BW, Osada, M, Ozawa, TC, Ma, R, Akatsuka, K, Ebina, Y, Funakubo, H, Ueda, S, Kobayashi, K & Sasaki, T 2009, 'Solution-based fabrication of perovskite nanosheet films and their dielectric properties', Japanese Journal of Applied Physics, vol. 48, no. 9 Part 2. https://doi.org/10.1143/JJAP.48.09KA15
Li, Bao Wen ; Osada, Minoru ; Ozawa, Tadashi C. ; Ma, Renzhi ; Akatsuka, Kosho ; Ebina, Yasuo ; Funakubo, Hiroshi ; Ueda, Shigenori ; Kobayashi, Keisuke ; Sasaki, Takayoshi. / Solution-based fabrication of perovskite nanosheet films and their dielectric properties. In: Japanese Journal of Applied Physics. 2009 ; Vol. 48, No. 9 Part 2.
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