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Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics Cover

Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics

Materials Science-Poland
Volume 34 (2016): Issue 1 (March 2016)
By:
Open Access
|Apr 2016

Figures & Tables

Fig. 1

X-ray diffraction pattern of CNT sintered at 1625 °C.
X-ray diffraction pattern of CNT sintered at 1625 °C.

Fig. 2

Secondary electron SEM micrograph of CNT sintered at 1625 °C.
Secondary electron SEM micrograph of CNT sintered at 1625 °C.

Fig. 3

Temperature dependence of ∊r and tanδ of CNT sample measured at different frequencies.
Temperature dependence of ∊r and tanδ of CNT sample measured at different frequencies.

Fig. 4

P-E hysteresis loop of CNT sample.
P-E hysteresis loop of CNT sample.

Fig. 5

(a) Plot of real part Z´ vs. imaginary part −Z˝ of the complex impedance Z* (b) spectroscopic plot of Z˝ and log f at different temperatures.
(a) Plot of real part Z´ vs. imaginary part −Z˝ of the complex impedance Z* (b) spectroscopic plot of Z˝ and log f at different temperatures.

Fig. 6

Spectroscopic plots of impedance Z˝ and modulus M˝ at temperatures (a) 744 °C (b) 782 °C and (c) 800 °C.
Spectroscopic plots of impedance Z˝ and modulus M˝ at temperatures (a) 744 °C (b) 782 °C and (c) 800 °C.

Fig. 7

Plots of frequency dependence of capacitance of grain and grain boundary regions at different temperatures.
Plots of frequency dependence of capacitance of grain and grain boundary regions at different temperatures.

The volumetric ratios of chemical compositions_

TiEthanolAcetic acidHNO3H2O
20 %80 %6 %3 %3 %

Values of R and C extracted from Z˝max and from M˝max_

Temp. [°C]Rgb [kW]Cgb [pF]Rg [kW]Cg [pF]
Extractedfrom Z˝maxExtractedfrom M˝max
74492.1313.7235.0805.71
78273.8213.5728.1335.70
80051.0312.4122.1905.66

EDX data of CNT sample sintered at 1625 °C_

ElementsCa [wt.%]Ti [wt.%]Nd [wt.%]
Grain (A)7.229.163.7
Grain (B)7.930.361.7
Grain (C)7.429.862.8
DOI: https://doi.org/10.1515/msp-2016-0021 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 164 - 168
Submitted on: Aug 31, 2015
Accepted on: Dec 8, 2015
Published on: Apr 27, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
sol-gel,
CaNdTiO,
electrical properties
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2016 Raz Muhammad, Muhammad Uzair, M. Javid Iqbal, M. Jawad Khan, Yaseen Iqbal, Carlos R. Rambo, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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