Article ID Journal Published Year Pages File Type
5458631 Journal of Alloys and Compounds 2017 31 Pages PDF
Abstract
The (0.9-x)[0.92Bi0.5Na0.5TiO3-0.08BaTiO3]-xSrZrO3-0.10NaNbO3 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10, abbreviated as BNTBT-100xSZ-NN) lead-free ferroelectric ceramics were prepared by conventional solid state reaction method. XRD Rietveld refinement indicates that R3c and P4bm phases coexist in the sample, while P4bm weakly polar phase accounts for a large proportion of 90%. BNT-100xSZ-NN shows broad permittivity peaks in the ɛ′-T curves. Slim P-E ferroelectric hysteresis loops are obtained due to the long range of ferroelectric order broken by the addition of SrZrO3 and NaNbO3 as well as the enhancement of the weakly polar region. The excellent energy storage properties are obtained at the composition of x = 0.08, which has high energy storage density of 0.95 J/cm3 at the electric field of 110 kV/cm and small variation (7%) in the temperature range of 25-175 °C.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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