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Structural refinement, optical and electrical properties of [Ba1−x Sm2x/3](Zr0.05Ti0.95)O3 ceramics

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Abstract

Samarium doped barium zirconate titanate ceramics with general formula [Ba1−x Sm2x/3](Zr0.05Ti0.95)O3 [x = 0, 0.01, 0.02, and 0.03] were prepared by high energy ball milling method. X-ray diffraction patterns and micro-Raman spectroscopy confirmed that these ceramics have a single phase with a tetragonal structure. Rietveld refinement data were employed to model [BaO12], [SmO12], [ZrO6], and [TiO6] clusters in the lattice. Scanning electron microscopy shows a reduction in average grain size with the increase of Sm3+ ions into lattice. Temperature-dependent dielectric studies indicate a ferroelectric phase transition and the transition temperature decreases with an increase in Sm3+ ion content. The nature of the transition was investigated by the Curie–Weiss law and it is observed that the diffusivity increases with Sm3+ ion content. The ferroelectric hysteresis loop illustrates that the remnant polarization and coercive field increase with an increase in Sm3+ ions content. Optical properties of the ceramics were studied using ultraviolet–visible diffuse reflectance spectroscopy.

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Acknowledgments

The Brazilian authors acknowledge the financial support of the Brazilian research financing institutions: CNPq (304531/2013-8; 479644/2012-8), CNPq-GERATEC (555684/2009-1), FAPESP, and CAPES.

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Authors and Affiliations

  1. Department of Physics, C.V. Raman College of Engineering, Bhubaneswar, 752054, Odisha, India

    T. Badapanda

  2. School of Physics, Sambalpur University, Jyoti Vihar Sambalpur, 768019, Odisha, India

    S. Sarangi & B. Behera

  3. Colloids and Materials Chemistry, Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India

    S. Anwar

  4. Department of Physics, Bose Institute, Kolkata, 700009, India

    T. P. Sinha

  5. Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India

    R. Ranjan

  6. CCN-DQ-GERATEC, Universidade Estadual do Piauí, João Cabral, N. 2231, P.O. Box 381, CEP: 64002-150, Teresina, PI, Brazil

    G. E. Luz Jr. & L. S. Cavalcante

  7. Universidade Estadual Paulista-CDMF, P.O. Box 355, CEP. 14801-907, Araraquara, SP, Brazil

    E. Longo

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  1. T. Badapanda
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Badapanda, T., Sarangi, S., Behera, B. et al. Structural refinement, optical and electrical properties of [Ba1−x Sm2x/3](Zr0.05Ti0.95)O3 ceramics. J Mater Sci: Mater Electron 25, 3427–3439 (2014). https://doi.org/10.1007/s10854-014-2035-7

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