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Synthesis of Sr2Nb3O10 nanosheets and their application for growth of thin film using an electrophoretic method

Authors
Lee, Woong-HeeIm, MirKweon, Sang-HyoWoo, Jong-UnNahm, SahnChoi, Ji-WonHwang, Seong-Ju
Issue Date
3월-2017
Publisher
WILEY
Keywords
dielectric materials; properties; electrophoretic deposition; layered ceramics; thin films
Citation
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.100, no.3, pp.1098 - 1107
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume
100
Number
3
Start Page
1098
End Page
1107
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/84231
DOI
10.1111/jace.14685
ISSN
0002-7820
Abstract
K(Sr2Nb3)O-10 (KSN) ceramic without the secondary phase was obtained from a KSN + 0.05K(2)O specimen sintered at 1350 degrees C. This ceramic was used as the precursor to synthesize Sr2Nb3O10- (SNO-) nanosheets, because it has a pure KSN phase with a large (002) plane. The SNO- nanosheets were deposited on a Pt/Ti/SiO2/Si substrate using the electrophoresis method at room temperature, and heated at various temperatures to get rid of the organic defects. The crystalline SNO phase without organic defects was formed in film annealed at 600 degrees C. However, when the annealing temperature exceeded 600 degrees C, the Pt electrode became unstable, resulting in degradation of the SNO film. Good electric properties were obtained from the SNO film annealed at 600 degrees C: dielectric constant of 70, dielectric loss of 0.017 at 1.0MHz, leakage current density of 3.5x10(-8)A/cm(2) at 0.2 MV/cm, and a breakdown electric field of 0.25MV/cm.
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