Abstract
In order to develop dielectric ceramics with temperature-stable permittivity characteristics, Eu and Ti co-doped K0.5Na0.5NbO3 [(1 − x)K0.5Na0.5NbO3-xEuTiO3] ceramics were prepared by a conventional solid state route. The effect of EuTiO3 on the phase structure and dielectric performance of KNN ceramics were investigated. The temperature dependence of the relative permittivity illustrated that the small amount of EuTiO3 depressed the dielectric peak of ferroelectric-paraelectric transition. Therefore, the temperature stability and relative permittivity of ceramics were effectively improved. As x = 0.03, the ceramic showed superior dielectric temperature stability (±10 %), very low dielectric loss (0.008 at 250 °C) and a relatively high permittivity (>1500 at 250 °C) over the temperature range from ~100 to 350 °C. It suggests that this ceramic is a promising candidate for high-temperature capacitor application.
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We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled, “Low dielectric loss and good thermal stability of Eu and Ti co-doped K0.5Na0.5NbO3 ceramics”.
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Fei, L., Shi, D., Huang, Y. et al. Low dielectric loss and good thermal stability of Eu and Ti co-doped K0.5Na0.5NbO3 ceramics. J Mater Sci: Mater Electron 26, 7159–7164 (2015). https://doi.org/10.1007/s10854-015-3340-5
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DOI: https://doi.org/10.1007/s10854-015-3340-5