Abstract
BaTiO3 nanopowder was synthesized at low temperature by using an alkoxide-hydroxide sol-gel method and were sintered by microwave processing. Microwave sintering of BaTiO3 was carried out at different temperatures for 20 min to get dense ceramics. The phases, morphologies, crystal structures and weight losses of the synthesized and sintered materials were characterized by using X-ray diffraction (XRD), Field-emission scanning electron microscope (FE-SEM), Raman spectroscopy and Thermo-gravimetric analyzer (TGA). The materials could only be sintered densely at lower temperatures (1050–1150 °C). Enhancements of the dielectric constant (ɛ r ∼ 3500 at 100 kHz) and the remnant polarization (P r ∼ 6.90 μc/cm2) were found for BaTiO3 microwave-sintered at 1150 °C, which values were higher than those obtained by the conventional sintering. P-E loops confirmed the better ferroelectric nature of the microwave-sintered BaTiO3.
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Saleem, M., Kim, I.S., Song, J.S. et al. Ferroelectric properties and microwave sintering of BaTiO3 synthesized by using the alkoxide-hydroxide sol-gel process. Journal of the Korean Physical Society 65, 92–97 (2014). https://doi.org/10.3938/jkps.65.92
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DOI: https://doi.org/10.3938/jkps.65.92