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Structural and electrical properties of Sr2NaNb4O13 thin film grown by electrophoretic method using nanosheets synthesized from K(Sr2Na)Nb4O13 compound
- Authors
- Im, Mir; Kweon, Sang-Hyo; Kim, Dong-Ha; Lee, Woong-Hee; Nahm, Sahn; Choi, Ji-Won; Hwang, Seong-Ju
- Issue Date
- 6월-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Layered perovskite; Inorganic nanosheets; Exfoliation; Electrophoresis; Dielectrics
- Citation
- JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.37, no.6, pp.2407 - 2413
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
- Volume
- 37
- Number
- 6
- Start Page
- 2407
- End Page
- 2413
- ISSN
- 0955-2219
- Abstract
- Sr2NaNb4O13- (SNNO-) nanosheets were exfoliated from the K(Sr2Na)Nb4O13 compound that was synthesized at 1200 degrees C. The SNNO- nanosheets were deposited on a Pt/Ti/SiO2/Si substrate at room temperature by the electrophoretic method. Annealing was conducted at various temperatures to remove organic defects in the SNNO film. A crystalline SNNO phase without organic defects was formed in the film annealed at 500 degrees C. However, a SrNb2O6 secondary phase was formed in the films annealed above 600 degrees C, probably due to the evaporation of Na2O. The SNNO thin film annealed at 500 degrees C showed a dielectric constant of 74 at 1.0 MHz with a dielectric loss of 2.2%. This film also exhibited a low leakage current density of 9.0 x 10(-8) A/cm(2) at 0.6 MV/cm with a high breakdown electric field of 0.72 MV/cm. (C) 2017 Elsevier Ltd. All rights reserved.
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