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Synthesis and analysis of electron density distribution in Ba1−xSrxTiO3 ceramics

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Abstract

The Ba1−xSrxTiO3 perovskites (abbreviated as BST, x = 0.2, 0.4 and 0.6) have been synthesized by high temperature solid state reaction technique. The influences of Sr doping on the morphology, electron density distribution and optical properties at the lattice sites of BaTiO3 have been investigated by X-ray diffraction, scanning electron microscopy and UV–visible spectroscopy. With the increase in Sr content, the lattice parameter, cell volume, density and the grain sizes are found to be reduced. The incorporation of Sr content into the BaTiO3 lattice decreases the ionic nature of the bonding between Ti and O ions and increases ionic nature between Ba and O ions and the energy gap measurements indicate the reduction in insulating property of the grown samples. The stoichiometry of the samples was further confirmed by energy dispersive X-ray spectroscopy.

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Authors and Affiliations

  1. Research Centre and PG Department of Physics, The Madura College, Madurai, Tamil Nadu, 625 011, India

    R. Saravanan

  2. PG and Research Department of Physics, NMSSVN College, Nagamalai, Madurai, Tamil Nadu, 625 019, India

    J. Mangaiyarkkarasi

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  1. R. Saravanan
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  2. J. Mangaiyarkkarasi
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Correspondence to J. Mangaiyarkkarasi.

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Saravanan, R., Mangaiyarkkarasi, J. Synthesis and analysis of electron density distribution in Ba1−xSrxTiO3 ceramics. J Mater Sci: Mater Electron 27, 2523–2533 (2016). https://doi.org/10.1007/s10854-015-4053-5

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  • DOI: https://doi.org/10.1007/s10854-015-4053-5

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