Solution-Based Fabrication of Perovskite Multilayers and Superlattices Using Nanosheet Process

• Bao-Wen Li

• Minoru Osada

• Kosho Akatsuka

• Yasuo Ebina

• Tadashi C. Ozawa

• Takayoshi Sasaki

抄録

We report a solution-based fabrication of perovskite multilayers and superlattices using perovskite nanosheets. Perovskite nanosheets (LaNb 2 O 7 , Ca 2 Nb 3 O 10 , and Sr 2 Nb 3 O 10 ) were prepared by delaminating layered perovskites. A layer-by-layer approach using Langmuir–Blodgett deposition was effective for fabricating high-quality nanofilms of perovskite nanosheets on various substrates, such as quartz glass, Si, and SrRuO 3 . Structural characterizations by X-ray diffraction, transmission electron microscopy, and hard X-ray photoelectron spectroscopy revealed that these perovskite nanofilms are composed of a well-ordered lamellar structure with an atomically sharp interface. The multilayer films exhibited a stable dielectric response inherent to the perovskite nanosheet. We also found that the superlattices of (LaNb 2 O 7 /Ca 2 Nb 3 O 10 ) 5 and (Sr 2 Nb 3 O 10 /Ca 2 Nb 3 O 10 ) 5 possess strong interface coupling, which gives rise to enhanced dielectric constant.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 50 (9S2), 09NA10-, 2011-09-01

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360003446856522112
• NII論文ID: 210000071268
• DOI: 10.1143/jjap.50.09na10
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.50.09NA10
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.50.09NA10/pdf
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