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Structural and electrical properties of Sr2NaNb4O13 thin film grown by electrophoretic method using nanosheets synthesized from K(Sr2Na)Nb4O13 compound

Title
Structural and electrical properties of Sr2NaNb4O13 thin film grown by electrophoretic method using nanosheets synthesized from K(Sr2Na)Nb4O13 compound
Authors
Im M.Kweon S.-H.Kim D.-H.Lee W.-H.Nahm S.Choi J.-W.Hwang S.-J.
Ewha Authors
황성주
SCOPUS Author ID
황성주scopus
Issue Date
2017
Journal Title
Journal of the European Ceramic Society
ISSN
0955-2219JCR Link
Citation
vol. 37, no. 6, pp. 2407 - 2413
Keywords
DielectricsElectrophoresisExfoliationInorganic nanosheetsLayered perovskite
Publisher
Elsevier Ltd
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Sr2NaNb4O13− (SNNO−) nanosheets were exfoliated from the K(Sr2Na)Nb4O13 compound that was synthesized at 1200 °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 °C. However, a SrNb2O6 secondary phase was formed in the films annealed above 600 °C, probably due to the evaporation of Na2O. The SNNO thin film annealed at 500 °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 × 10−8 A/cm2 at 0.6 MV/cm with a high breakdown electric field of 0.72 MV/cm. © 2017 Elsevier Ltd
DOI
10.1016/j.jeurceramsoc.2017.02.012
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자연과학대학 > 화학·나노과학전공 > Journal papers
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