Dielectric Property of NaCu3Ti3NbO12 Ceramics Doped with Small Amount MgO Nanopowder

Wilai Chomchai; Chompoonuch Warangkanagool

doi:10.4028/www.scientific.net/KEM.675-676.93

Paper Titles

The Entrapment of Vitamin E in Nanostructured Lipid Carriers of Rambutan Seed Fat for Cosmeceutical Uses
p.77

Treatment of Wastewater from Rubber Processing Using Hydroxyapatite and Lampang Clay Nanocomposite Filters
p.81

Alcohol Sensing Properties of SnO₂/CNT Nanocomposites Synthesized by Microwave-Assisted Process
p.85

Development of Self-Striking Red Glass from Gold Nanoparticles
p.89

Dielectric Property of NaCu₃Ti₃NbO₁₂ Ceramics Doped with Small Amount MgO Nanopowder
p.93

Effect of Cobalt Dopant on Structural and Optical Properties of Co-Precipitated TiO₂ Nanopowders
p.97

Effects of CdS-TiO₂ Working Electrode Layer on Dye Sensitized Solar Cell Investigated by Impedance Spectroscopy
p.101

Effects of Sintering Temperature on Physical and Mechanical Properties of HA/YSZ Nanocomposites
p.105

Electrical Properties of Single-Walled Carbon Nanotubes due to Compressive Load
p.109

HomeKey Engineering MaterialsKey Engineering Materials Vols. 675-676Dielectric Property of NaCu3Ti3NbO12 Ceramics...

Dielectric Property of NaCu₃Ti₃NbO₁₂ Ceramics Doped with Small Amount MgO Nanopowder

Abstract:

In this study, the NaCu₃Ti₃NbO₁₂ ceramics + (0-0.5 vol%)MgO nanopowder were prepared by solid state reaction. The precursors were ball milled for 24 hours and calcined at 700-1000°C. Selected the calcinations temperature with calculate pure phase from XRD results. The powders on selected temperature were various dwell time for 2-24 hours. The optimum calcination condition for NaCu₃Ti₃NbO₁₂ powder is 950°C for 24 hours. The calcined powders were doped with small amounts of MgO nanopowder and pressed into a disc shape. Sinter the green body at 975-1025°C for 10 hours. Microstructure and density were examined by scanning electron microscope (SEM) and Archimedes method with distilled water as the fluid, respectively. The rectangular grain and normal grain growth are observed. The highest relative density of NaCu₃Ti₃NbO₁₂ ceramics + (0-0.5 vol%)MgO nanopowder sintered at 1000°C are close to 90%. An impedance analyzer was also used to measure the dielectric constant (ε_r) of 1000°C sintered sample at room temperature. The doping of small amounts of MgO nanopowder to make improved NaCu₃Ti₃NbO₁₂ ceramic dielectric constants and the optimum condition for doping MgO nanopowder is 0.1 vol%.

You might also be interested in these eBooks

Applied Physics and Material Applications II

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 675-676)

Pages:

93-96

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.675-676.93

Citation:

Cite this paper

Online since:

January 2016

Authors:

Wilai Chomchai, Chompoonuch Warangkanagool*

Keywords:

Dielectric Property, MgO Nanopowder, NCTNO Ceramic

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Y. Liu, W. Wang, J. Huang, F. Tang, C. Zhu and Y. Cao, Dielectric properties of giant permittivity NaCu3Ti3NbO12 ceramics, Ceram. Int. 39 (2013) 9201–9206.

DOI: 10.1016/j.ceramint.2013.05.023

Google Scholar

[2] B. Rivas-Murias, M. Sanchez-Andujar, J. Rivas, M.A. Senaris-Rodriguez, Influence of high levels of Nb and Ti doping on the dielectric properties of CaCu3Ti4O12 type of compounds, Mater. Chem. Phys. 120 (2010) 576–581.

DOI: 10.1016/j.matchemphys.2009.12.006

Google Scholar

[3] M. A. Subramanian, D. Li, N. Duan, B. A. Reisner, A. W. Sleight, High dielectric constant in ACu3Ti4O12 and ACu3Ti3FeO12 phases, J. Solid State Chem. 151 (2000) 323-325.

DOI: 10.1006/jssc.2000.8703

Google Scholar

[4] L.F. Xu, P.B. Qi, S.S. Chen, R.L. Wang, C.P. Yang, Dielectric properties of bismuth doped CaCu3Ti4O12 ceramics, Mater. Sci. Eng. B 177 (2012) 494– 498.

DOI: 10.1016/j.mseb.2012.02.001

Google Scholar

[5] M. A. Subramanian, A. W. Sleight, ACu3Ti4O12 and ACu3Ru4O12 perovskites: high dielectric constants and valence degeneracy, Solid State Sci. 4 (2002) 347–351.

DOI: 10.1016/s1293-2558(01)01262-6

Google Scholar

[6] W. T. Hao, J. L. Zhang, Y. Q. Tan, W. B. Su, Giant dielectric-permittivity phenomena of compositionally and structurally CaCu3Ti4O12-like oxide ceramics, J. Am. Ceram. Soc. 92 (2009) 2937–2943.

DOI: 10.1111/j.1551-2916.2009.03298.x

Google Scholar

[7] A. K. Rai, K.D. Mandal, D. Kumar, O. Parkash, Characterization of nickel doped CCTO: CaCu2. 9Ni0. 1Ti4O12 and CaCu3Ti3. 9Ni0. 1O12 synthesized by semi-wet route, J. Alloy. Compd. 491 (2010) 507–512.

DOI: 10.1016/j.jallcom.2009.10.247

Google Scholar

[8] K. Sanjoom, C. Puchmark, Effect of MgO Nanoparticles on Propertiesof PZT Ceramics, Ferroelectrics, 416 (2011) 47–52.

DOI: 10.1080/00150193.2011.577665

Google Scholar

[9] J. Wang, H. Nie, C. Lan, G. Wang, X. Dong, X. Chen, F. Cao, H. He, Microstructure, electrical and mechanical properties of MgO nanoparticles-reinforced porous PZT 95/5 ferroelectric ceramics, Ceram. Int. 39 (2013) 3915–3919.

DOI: 10.1016/j.ceramint.2012.10.238

Google Scholar

[10] X. -F. Zhang, Q. Xu, D. Zhan, H. -X. Liu, W. Chen, D. -P. Huang, Dielectric response of MgO-added Ba0. 6Sr0. 4TiO3 ceramics under bias electric field: Examination of contributing mechanisms, Physica B 410 (2013) 170–176.

DOI: 10.1016/j.physb.2012.10.043

Google Scholar