Study of Pb(Zr0.65Ti0.35)O3(PZT(65/35) doping on structural, dielectric and conductivity properties of BaTiO3(BT) ceramics

Arun Chamola1*, Hemant Singh2, U.C. Naithani3

1Department of Physics, Hemwati Nandan Bahuguna Garhwal University, Srinagar (Garhwal) Campus Pauri, Uttarakhand 246001, India

2Department of Physics, Government Post Graduate College, Gopeshwar (Chamoli), Uttarakhand 246401, India

3Department of Physics, Hemwati Nandan Bahuguna Garhwal University, Srinagar (Garhwal), Campus Pauri, Uttarakhand 246001, India

Adv. Mater. Lett., 2011, 2 (2), pp 148-152

DOI: 10.5185/amlett.2010.11183

Publication Date (Web): Apr 08, 2012



(1−x)BaTiO3–xPZT(65/35) ceramics were prepared by high temperature solid state reaction technique. Structural properties of the compounds were examined using an X-ray diffraction (XRD) technique to confirm the formation of phase at room temperature. Detailed studies of dielectric properties of (1−x) BaTiO3–xPZT(65/35) for all compositions were in temperature range 30-200 oC reveal that the compound have transition temperature well above at the room temperature. While pure BaTiO3 ceramics exhibited a sharp phase transformation expected for normal ferroelectrics, phase transformation behavior of the (1−x)BaTiO3–xPZT(65/35) solid solutions became more diffuse with increasing PZT(65/35) contents. The diffusivity of the dielectric peaks in the compound exhibited the values between 1 and 2 where the higher value indicates the greater disorder in the systems. This was primarily evidenced by an increased broadness in the dielectric peak, with a maximum peak width occurring at x = 0.5. The temperature dependence of ac conductivity indicated that the electrical conductivity decrease above Tc on increasing the PZT(65/35) contents. This increase in the conductivity is attributed to the increase in polarizability of the materials around Tc, due to oxygen vacancies.


Perovskite, ferroelectrics, dielectric properties, SEM.

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