Novel Ceramic Materials, Chapter 5

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Ferroelectric Charge Ordering in BaTi0.9Zr0.1O3 Lead-Free Ceramics through Powder X-Ray Diffraction

J. Mangaiyarkkarasi, R. Saravanan

In this work, we report the structural, ferroelectric charge ordering and optical properties of lead-free BaTi0.9Zr0.1O3 ceramics synthesized by the high temperature solid state reaction method. The grown sample was characterized using powder X-ray diffraction, Rietveld refinement, UV-visible spectroscopy and scanning electron microscopy. The tetragonal structure of the sample was confirmed through the X-ray data. Two dimensional MEM charge density maps and one dimensional profiles revealed the enhanced covalent character between titanium and oxygen ions and the ionic nature between barium and oxygen ions. The energy band gap is evaluated as 2.87eV from UV-vis analysis. The surface morphology is analyzed with the SEM micrograph.

Keywords
Ceramics, X-Ray Diffraction, Charge Density, Rietveld Refinement, Maximum Entropy Method

Published online 6/1/2016, 14 pages

DOI: 10.21741/9781945291036-5

Part of Novel Ceramic Materials

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