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Research Article | Open Access

Dielectric behavior of CaCu3Ti4O12 electro-ceramic doped with La, Mn and Ni synthesized by modified citrate-gel route

Laxman SINGHa, U. S. RAIa, Alok Kumar RAIb, K. D. MANDALc,*( )
Department of Chemistry, Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, U.P., India
Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Bukgu, Gwangju 500-757, Republic of Korea
Department of Applied Chemistry, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, U.P., India
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Abstract

The effect of La3+, Mn2+ and Ni2+ doped calcium copper titanate, CaCu3Ti4O12 (CCTO), at higher concentrations (CR1 and CR2 with 5 mol% and 10 mol%, respectively), has been examined by semi-wet route at relatively lower temperature. This semi-wet route employs citrate–nitrate gel chemical method using TiO2 solid powders. X-ray diffraction (XRD) analysis confirms the formation of single phase in the doped samples sintered at 900 ℃ for 8 h. Scanning electron micrographs (SEM) show that the average grain size for CR2 is larger than that of CR1 composition. The energy dispersive X-ray spectroscopy (EDX) is used to study the percentage compositions of different ions present in both ceramics. Dielectric constant (εr) and dielectric loss (tanδ) values of CR1 are comparatively higher than those of CR2 ceramic at all measured frequencies and temperatures. The nature of temperature-dependent relaxation behavior of the ceramics is also studied by impedance, modulus spectroscopic analysis and confirms Maxwell–Wagner relaxation.

Keywords

dielectric propertiesX-ray diffraction (XRD)chemical synthesisoxide materialsgrain boundaries

References

[1]
Subramanian MA, Li D, Duan N, et al. High dielectric constant in ACu3Ti4O12 and ACu3Ti3 FeO12 phases. J Solid State Chem 2000, 151: 323–325.
Crossref Google Scholar
[2]
Ramirez AP, Subramanian MA, Gardel M, et al. Giant dielectric constant response in a copper-titanate. Solid State Commun 2000, 115: 217–220.
Crossref Google Scholar
[3]
Sinclair DC, Adams TB, Morrison FD, et al. CaCu3Ti4O12: One-step internal barrier layer capacitor. Appl Phys Lett 2002, 80: 2153.
Crossref Google Scholar
[4]
Homes CC, Vogt T, Shapiro SM, et al. Optical response of high-dielectric-constant perovskite-related oxide. Science 2001, 293: 673–676.
Crossref Google Scholar
[5]
Lunkenheimer P, Bobnar V, Pronin AV, et al. Origin of apparent colossal dielectric constants. Phys Rev B 2002, 66: 052105.
Crossref Google Scholar
[6]
Lunkenheimer P, Fichtl R, Ebbinghaus SG, et al. Nonintrinsic origin of the colossal dielectric constants in CaCu3Ti4O12. Phys Rev B 2004, 70: 172102.
Crossref Google Scholar
[7]
Buscaglia MT, Viviani M, Buscaglia V, et al. Incorporation of Er3+ into BaTiO3. J Am Ceram Soc 2002, 85: 1569–1575.
Crossref Google Scholar
[8]
Bender BA, Pan MJ. The effect of processing on the giant dielectric properties of CaCu3Ti4O12. Mat Sci Eng B 2005, 117: 339–347.
Crossref Google Scholar
[9]
Smith AE, Calvarese TG, Sleight AW, et al. An anion substitution route to low loss colossal dielectric CaCu3Ti4O12. J Solid State Chem 2009, 182: 409–411.
Crossref Google Scholar
[10]
Singh L, Rai US, Mandal KD. Preparation and characterization of nanostructured CaCu2.90Zn0.10Ti4O12 ceramic. Nanomater Nanotechnol 2011, 1: 59–66.
Google Scholar
[11]
Leret P, Fernandez J, de Frutos J, et al. Nonlinear I–V electrical behaviour of doped CaCu3Ti4O12 ceramics. J Eur Ceram Soc 2007, 27: 3901–3905.
Crossref Google Scholar
[12]
Mandal KD, Rai AK, Kumar D, et al. Dielectric properties of the Ca1−xLaxCu3Ti4−xCoxO12 system (x = 0.10, 0.20 and 0.30) synthesized by semi-wet route. J Alloys Compd 2009, 478: 771–776.
Crossref Google Scholar
[13]
Li M, Feteira A, Sinclair DC, et al. Influence of Mn doping on the semiconducting properties of CaCu3Ti4O12 ceramics. Appl Phys Lett 2006, 88: 232903.
Crossref Google Scholar
[14]
Rai AK, Mandal KD, Kumar D, et al. Dielectric properties of lanthanum-doped CaCu3Ti4O12 synthesized by semi-wet route. J Phys Chem Solids 2009, 70: 834–839.
Crossref Google Scholar
[15]
Shannon RD, Prewitt CT. Revised values of effective ionic radii. Acta Cryst 1970, B26: 1046–1048.
Crossref Google Scholar
[16]
Kim DW, Kim TG, Hong KS, et al. Low-firing of CuO-doped anatase. Mater Res Bull 1999, 34: 771–781.
Crossref Google Scholar
[17]
Huang CL, Chen YC. Low temperature sintering and microwave dielectric properties of SmAlO3 ceramics. Mater Res Bull 2002, 37: 563–574.
Crossref Google Scholar
[18]
Ni L, Chen XM, Liu XQ. Structure and modified giant dielectric response in CaCu3(Ti1−xSnx)4O12 ceramics. Mater Chem Phys 2010, 124: 982–986.
Crossref Google Scholar
[19]
Jha P, Arora P, Ganguli AK. Polymeric citrate precursor route to the synthesis of the high dielectric constant oxide, CaCu3Ti4O12. Mater Lett 2003, 57: 2443–2446.
Crossref Google Scholar
[20]
Singh L, Rai US, Mandal KD. Influence of Zn doping on microstructures and dielectric properties in CaCu3Ti4O12 ceramic synthesised by semiwet route. Adv Appl Ceram 2012, 111: 374–380.
Crossref Google Scholar
[21]
Shao SF, Zhang JL, Zheng P, et al. Microstructure and electrical properties of CaCu3Ti4O12 ceramics. J Appl Phys 2006, 99: 084106.
Crossref Google Scholar
[22]
Yu HT, Liu HX, Hao H, et al. Grain size dependence of relaxor behavior in CaCu3Ti4O12. Appl Phys Lett 2007, 91: 222911.
Crossref Google Scholar
[23]
Hodge IM, Ingram MD, West AR. Impedance and modulus spectroscopy of polycrystalline solid electrolytes. J Electroanal Chem Interfacial Electroch 1976, 74: 125–143.
Crossref Google Scholar
[24]
Fang TT, Lin WJ, Lin CY. Evidence of the ultrahigh dielectric constant of CaSiO3-doped CaCu3Ti4O12 from its dielectric response, impedance spectroscopy, and microstructure. Phys Rev B 2007, 76: 045115.
Crossref Google Scholar
[25]
Mazni M, Daud WM, Talib SA, et al. AC conductivity of Ca1−xAxCu3Ti4O12 (A = Sr or Ba) with x = 0.0 and 0.2 ceramics. Solid State Sci Tech 2009, 17: 222–228.
Google Scholar
[26]
Chanmal CV, Jog JP. Dielectric relaxations in PVDF/BaTiO3 nanocomposites. Express Polym Lett 2008, 2: 294–301.
Crossref Google Scholar
[27]
Zhang L, Shan XB, Wu PX, et al. Dielectric characteristics of CaCu3Ti4O12/P(VDF-TrFE) nanocomposites. Appl Phys A 2012, 107: 597–602.
Crossref Google Scholar
Journal of Advanced Ceramics
Volume 2 Issue 2,
June 2013
Pages 119-127
DOI: 10.1007/s40145-013-0049-x
Cite this article:
SINGH L, RAI US, RAI AK, et al. Dielectric behavior of CaCu3Ti4O12 electro-ceramic doped with La, Mn and Ni synthesized by modified citrate-gel route. Journal of Advanced Ceramics, 2013, 2(2): 119-127. https://doi.org/10.1007/s40145-013-0049-x

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Received: 12 December 2012
Revised: 29 January 2013
Accepted: 20 February 2013
Published: 04 June 2013
© The author(s) 2013

Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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