Journal of the Australian Ceramic Society

, Volume 55, Issue 1, pp 201–218 | Cite as

Structural, morphological, electrical, impedance and ferroelectric properties of BaO-ZnO-TiO2 ternary system

  • K. Chandra Babu NaiduEmail author
  • V. Narasimha Reddy
  • T. Sofi Sarmash
  • D. Kothandan
  • T. Subbarao
  • N. Suresh Kumar


A series of (BaO)x-(ZnO)1-x-TiO2 (x = 0.1–0.9) ceramic materials were synthesized via the conventional solid-state reaction method and finally sintered at 1200 °C. The diffraction pattern revealed that the cubic (Zn2Ti3O8 and BaTiO3) and monoclinic (Ba2ZnTi5O13) phases were present in the resultant compositions. The morphology was analysed using scanning electron microscope. The presence of metal oxide (M-O) stretching vibrations was confirmed by Fourier transform infrared spectra. The AC electrical properties such as dielectric constant (εr), loss tangent (tan δ) and AC conductivity (σac) were investigated as a function of temperature (313–673 K) and frequency (100 Hz–5 MHz). The high dielectric constant and loss values were obtained for higher barium contents (beyond x = 0.5) owing to the presence of smaller number of monoclinic Ba2ZnTi5O13 phases. The effect of space-charge polarization was explained from dielectric modulus (M′ and M″) behaviour. The Nyquist plots (Z′ versus Z″) were drawn to justify the electrical conduction mechanism of all compositions. The bulk resistances (Rb) were calculated from Nyquist plots. The room temperature ferroelectric behaviour was illustrated with the help of P-E loop tracer.


Ceramics Morphology Dielectric constant Electrical conductivity Impedance analysis Ferroelectric properties 



I acknowledge the Department of Physics, S.K. University, Anantapur, for providing various facilities for sample preparation. Also thankful to Prof. S. Kalainathan, Vellore Institute of Technology (VIT), Tamil Nadu, and IISC-Bangalore for providing P-E loop facility and SEM photos, respectively.


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Copyright information

© Australian Ceramic Society 2018

Authors and Affiliations

  • K. Chandra Babu Naidu
    • 1
    Email author
  • V. Narasimha Reddy
    • 2
  • T. Sofi Sarmash
    • 2
  • D. Kothandan
    • 3
  • T. Subbarao
    • 2
  • N. Suresh Kumar
    • 4
  1. 1.Srinivasa Ramanujan Institute of TechnologyAnantapuramuIndia
  2. 2.Materials Research Laboratory, Department of PhysicsS. K. UniversityAnantapurIndia
  3. 3.Sreenivasa Institute of Technology and Management SciencesChittoorIndia
  4. 4.Department of PhysicsJNTUCEAAnantapuramuIndia

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