Document Type : Research Article


1 Department of Physics, Faculty of Engineering and Technology, Vadapalani Campus, SRM University, Chennai 600026, Tamilnadu, India

2 Department of Physics, Faculty of Science and Humanity, Dr. Pauls Nagar, Vanur Taluk, Villupuram 605109, Tamilnadu, India


Barium Titanate doped with Cobalt is known for both its electric and magnetic properties. The synthesis and characterization of Cobalt doped barium titanate; BaTi1-xCoxO3(BTCO) x = 0.5was investigated with a view to understand its structural, magnetic and electrical properties. A finest possible sample of Co doped micro particles of BaTiO3 (BTO) with possible tetragonal structure via a solid-state route was prepared. Prepared samples of BaTi1-xCoxO3 (BTCO) were structural characterized by X-ray diffraction (XRD). The dielectric constant measurements of the samples were carried out at 1Hz to
1 MHz Vibrating Sample Magnetometer (VSM) measurements revealed the magnetic nature of Cobalt doped BaTiO3. Ferroelectric hysteresis loop traced at the electric field in-between -15 to +15 (KV/cm). The relaxation phenomena that take place cane be attributable to the damping of dipole oscillator due to the application of external field. The impedance measurements were done up to 473 K in order to separate grain (bulk) and grain boundary contributions. The FESEM micrographs show proper grain growth and EDAX confirmed the presence of all the elements in samples. In the present study, various electrical properties of barium titanate based ceramics were explained and examples of the relevant applications were given. Copyright © 2017 VBRI Press.


1.D. Makovec, Z. Samadmija and M. Drofenik, “Effect of Copper
Doping on Structural, Dielectric and DC
Electrical Resistivity
Properties of BaTiO
3,J. Am. Ceram. Soc. 87, 1324 (2004).
D. Maga, P. Igor and M. Sergei,“Influence of impurities on the
properties of rare
-earth-doped barium-titanate ceramics”, J. Mater.
10, 941 (2000).
3.A. Jana, T. K. Kundu, S. K. pradhan and D. Chakravorty,
“Dielectric behavior of Fe-ion doped BaTiO3nanoparticles” J.
Appl. Phys. 97 (4), 44311 (2005).

Z. Jin, C. Ang and Z. Yu “Incorporation of Yttrium in Barium
Titanate Ceramics
”, J. Am. Ceram. Soc. 82(5) 1345 (1999).
5.P. Yongping, Y. Wenhu and C. Shoutian,“Influence of Rare Earths
on Electric Properties and Microstructure of Barium Titanate
Ceramics”, J. Rare Earths. 25, 154 (2007).

V.P.Pavlovic1, B.D.Stojanovic2 , V.B.Pavlovic3*), Z.Marinkovic-
Stanojevic2 , Lj.Živković4 ,
M.M.Ristic “Synthesis of BaTiO3
from a Mechanically Activated BaCO3
-TiO2 System”, Sci. Sinter.
, 155 (2008); Sci. Sinter.40, 235 (2008).
Ha M. Nguyen, N. V. Dang, Pei-YuChuang“Tetragonal and
hexagonal polymorphs of BaTi
1-xFexO3-δmultiferroics using x-ray
and Raman analyses”
,Appl. Phys. Lett. 99, 202501 (2011).
8.F. Jona and G. Shirane, “Ferroelectric Crystals”, (Dover
Pulications, ICN., New York, 1993).
9.R. L. Brutchey, G. Cheng, Q. Gu, “Positive Temperature
Coefficient of Resistivity in Donor
-Doped BaTiO3Ceramics
derived from Nanocrystals synthesized at Low Temperature”, Adv.

Mater. 20, 1029 (2008).

10.J. Nowotny and M. Rekas, “Defect Structure, Electrical Properties
and Transport in Barium Titanate. VII. Chemical Diffusion in Nb-
Doped BaTiO3”, Ceramics International 20, 265 (1994).

11.M. Kaczmarek and R.W. Eason, “Very-high-gain single-pass two-
beam coupling in blue Rh:BaTiO3”, Opt. Lett. 20, 185 (1995).

12.G. N. Henderson, J. F. Walkup, and E. J. Bochove, “Optical
quadratic processor using four-wave mixing in BaTiO3”, Opt. Lett.
14, 770 (1989).

13.P. Günter and J.-P. Huignard (edts.), “Photorefractive Materials
and Their Applications”1, (Springer Science-Bussiness Media,
Inc., New York , 2006).

P. Tang, D. Towner, T. Hamano“Electrooptic modulation up to
40 GHz in a barium titanate thin film waveguide modulator,”
Express 12, 5962 (2004).

W. Liu, W. Chen, L. Yang, “Ferroelectric aging effect in hybrid-
BaTiO3ceramics and the associated large recoverable
., Appl. Phys. Lett.89, 172908 (2006).
X. Ren“Large electric-field-induced strain in ferroelectric crystals
by point
-defect-mediated reversible domain switching”, Nature
Mater. 3, 91 (2004).

17.X. Ren and K Otsuka“Universal Symmetry Property of Point
Defects in Crystals”, Phys. Rev.Lett. 85, 1016 (2000).

18.Lee J S, Khim Z G, Park Y D, Norton D P, Theodoropoulou N A,
Hebard A F, Budai J D,Boatner L A, Pearton S J and Wilson R G
“Magnetic properties of Co-and Mn-implanted BaTiO3, SrTiO3
and KTaO3”, Solid State Electron. 47 2225 (2003).

19.McCrum N G, Read B E and Williams G “Anelastic and Dielectric
Effects in Polymeric Solids” (New York: Wiley) 1967.
20.Wagner H and RichertR “Thermally stimulated modulus relaxation
in polymers: method and interpretation,”J.
Polymer 38 5801(1997)
Leon C, Luci
a M L and Santamaria “Correlated ion hopping in
-crystal yttria-stabilized zirconia ”J. Phys. Rev. B 55

21.Macedo P B, Moynihan C T and Bose R “The long time aspects of
this correlation function, which are obtainable by bridge
techniques at temperatures approaching the glass transition”, Phys.
Chem.Glasses13 171(1972).

22.Liu J, DuanCh-G, Yin W-G, Mei W N, Smith R W and Hardy J
R,“Dielectric permittivity and electric modulus in Bi2Ti4O11J.
Chem. Phys. 119 2812 (2003).

23.A.G. Belous, O.V. Ovchar,M. Valant, D. Suvorov, D. Kolar“The
effect of partial isovalent substitution in the A-sublattice on MW
properties of materials based on Ba6-xLn8+2x/3Ti18O54solid
solutions”, J. Eur. Ceram. Soc. 21, 2723(2001).

24.DalveerBindraKaur, SukhleenNarang, K. Singh“Synthesis and
characterization of Ba6 3xSm8+2xTi18O54microwave dielectric
ceramics”, Ceram.Int.33, 249(2007).

25.McCrum N G, Read B E and Williams G “Anelastic and Dielectric
Effects in Polymeric Solids” (New York: Wiley)1967.

26.PetricA and Ling H “Electrical Conductivity and Thermal
Expansion of Spinels at Elevated Temperatures” J. Am. Ceram.
Soc. 90 1515(2007).