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
최지원남산Mir ImSang-Hyo KweonDong-Ha KimWoong-Hee LeeSeong-Ju Hwang
Keywords
Layered perovskite; Inorganic nanosheets; Exfoliation; Electrophoresis; Dielectrics
Issue Date
2017-06
Publisher
Journal of the European Ceramic Society
Citation
VOL 37, NO 6-2413
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.
URI
http://pubs.kist.re.kr/handle/201004/65865
ISSN
0955-2219
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KIST Publication > Article
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