Structural and Electrical Properties of 0.6 Pb(Mg1/3Nb2/3)O3-0.4 PbTiO3 Ceramics

J.K. Mishraa, K. Agrawalb, S.K. Mohantyc, B. Beheraa aSchool of Physics, Sambalpur University, Jyoti Vihar, Burla-768019, Odisha, India bDepartment of Physics, Veer Surendra Sai University of Technology, Burla-768018, Sambalpur, Odisha, India cDepartment of Physics, Kendrapara Autonomous College, Kendrapara-754 211, Odisha, India

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0.6Pb(Mg1/3Nb2/3)O3-0.4PbTiO3 ceramics are prepared by a mixed-oxide method and detail analysis of structural and electrical properties is carried out. The Rietveld refinement of X-ray diffraction data suggests that the compound has both a tetragonal and a cubic phase. From the complex impedance plots, the major effects of impedance are found, i.e., grain, grain boundary resistance and the presence of non-Debye type of relaxation. From the conductivity study, the ac conductivity is found to rise with temperature and the activation energy is found to be 0.71 eV.

DOI:10.12693/APhysPolA.140.415 topics: Rietveld, XRD, complex impedance, conductivity