NDLI: Microwave and broadband dielectric properties of Ni substituted MgTiO$

Content Provider	Springer Nature Link
Author	Gogoi, Pallabi Sharma, Pramod Pamu, D.
Copyright Year	2016
Abstract	The present study reports the temperature dependence of dielectric response of Ni doped MgTiO$_{3}$ ceramics over a broad frequency range. (Mg$_{1−x }$Ni$_{ x }$)TiO$_{3}$ (x = 0.00–0.07) ceramics are prepared by a solid-state reaction process. The processing parameters are optimized to achieve maximum relative density. Among all the samples, (Mg$_{0.95}$Ni$_{0.05}$)TiO$_{3}$ (MNTO) ceramics is exhibited the highest density with the best microstructure at 1300 °C. The optimum microwave dielectric properties (ε $_{ r }$ ~ 17.44, Q × f $_{0}$ ~ 181 THz) are displayed by the sample doped with x = 0.05 wt%. The detailed dielectric studies are performed on (Mg$_{0.95}$Ni$_{0.05}$)TiO$_{3}$ composition in two different frequency ranges, 100 Hz–100 kHz at 298–358 K and 1–100 MHz at 133–503 K, respectively. A dielectric constant of 18.26 at 100 MHz is observed for (Mg$_{0.95}$Ni$_{0.05}$)TiO$_{3}$ specimen at temperature 503 K. The frequency dependent conductivity is explained based on the basis of Jonscher power law. Further, the DC conductivity results obey the Arrhenius law, and the obtained activation energies are found to be 0.41 and 0.06 eV for (Mg$_{0.95}$Ni$_{0.05}$)TiO$_{3}$ ceramics, measured at 100 MHz for high temperature (293–503 K) and cryogenic temperatures (133–293 K), respectively.
Starting Page	9052
Ending Page	9060
Page Count	9
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	27
Issue Number	9
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2016-05-09
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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