NDLI: Dielectric properties of ZnNb$_{2}$ O $_{6}$ -TiO $

Content Provider	Springer Nature Link
Author	Kim, Jin Young Hong, Kug Sun Jung, Hyun Suk
Copyright Year	2006
Abstract	ZnNb$_{2}$O$_{6}$-TiO$_{2}$ mixture thin films with multilayer structures were fabricated via a sol-gel spin coating process. TiO$_{2}$ layers were deposited on the pre-crystallized ZnNb$_{2}$O$_{6}$ layers in order to suppress the formation of the ixiolite phase which always forms in the bulk system. The phase constitution of the thin films, confirmed by X-ray diffraction (XRD), could be controlled by the annealing temperatures, which, in turn, influenced the dielectric properties of the thin films. TiO$_{2}$ layers crystallized as the anatase phase and then transformed to the rutile phase at temperatures higher than 725$^{∘}$C. Dielectric constants of the mixture thin films, measured at 1 MHz with an MIM (metal-insulator-metal) structure, increased from 27 to 41 with dielectric losses below 0.005 as the annealing temperature increased from 700$^{∘}$C to 900$^{∘}$C. The increase in the dielectric constants was understood to originate from the increasing amounts of the rutile phase. Temperature coefficients of capacitance (TCC) were also measured between 25$^{∘}$C and 125$^{∘}$C, which showed a decreasing manner from positive values to negative values with increasing annealing temperatures. When annealed at 850$^{∘}$C, the TCC of the thin films could be tuned to be approximately 0 ppm/$^{o}$C with dielectric constant and dielectric loss of 36 and 0.002, respectively.
Starting Page	179
Ending Page	183
Page Count	5
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	17
Issue Number	2-4
e-ISSN	15738663
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ZnNb$_{2}$O$_{6}$ TiO$_{2}$ Mixture thin films Dielectric properties TCC Electrochemistry Optical and Electronic Materials Characterization and Evaluation Materials Ceramics, Glass, Composites, Natural Methods Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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