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Growth behavior and thermally stable electrical properties of TiNbO5 nanosheet thin films grown using the electrophoretic method

Authors
Im, MirLee, Woong-HeeKweon, Sang-HyoKang, Chong-YunNahm, Sahn
Issue Date
4월-2019
Publisher
ELSEVIER SCI LTD
Keywords
Inorganic nanosheets; TiNbO5 film; Electrophoresis; Robust dielectric; High temperature capacitor
Citation
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.39, no.4, pp.1149 - 1155
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume
39
Number
4
Start Page
1149
End Page
1155
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/66487
DOI
10.1016/j.jeurceramsoc.2018.12.057
ISSN
0955-2219
Abstract
TiNbO5 (TNO) thin films were deposited by electrophoresis at room temperature by using TNO- nanosheets. These TNO films exhibited a large (001) interplanar distance (1.18 nm) owing to the presence of TBA(+) between the TNO layers. The TBA(+), which were used to synthesize the TNO- nanosheets, were removed from the TNO film after annealing at 600 degrees C. Two types of structures were developed in the film annealed at 600 degrees C: type-1 and type-2, which revealed (001) interplanar distances of 0.52 and 0.71 nm, respectively. The TNO film annealed at 600 degrees C showed a dielectric constant of 48.5, low dielectric loss (0.02), and small leakage current density of 4.16 x 10(-7) A/cm(2) at 0.6 MV/cm. The dielectric properties were stable with respect to the film thickness and the applied electric field; the dielectric and insulation properties were maintained up to 300 degrees C. Therefore, TNO films are good candidates for high-temperature capacitors.
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