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Crystal structure and dielectric properties of (1 − x)(NaBi)1/2TiO3 · xBi(ZnTi)1/2O3 perovskite solid solutions

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Abstract

(1 − x)(NaBi)1/2TiO3 · xBi(ZnTi)1/2O3 ceramics have been prepared by solid-state reactions. In the composition range x < 0.2, we obtained (NaBi)1/2TiO3-based solid solutions with a rhombohedrally distorted perovskite structure. With increasing x, the degree of rhombohedral distortion, the angle of antiphase tilts of oxygen octahedra about the hexagonal axis in the unit cell, and the octahedral strain decrease systematically and the unit-cell parameters a H and c H increase. We have studied the dielectric properties of the solid solutions using ceramic samples. The results demonstrate that the ceramics undergo a high-temperature diffuse ferroelectric phase transition. Near the temperature of the maximum in the real part of the dielectric permittivity (510–610 K), the ceramics have low ɛ′ dispersion and low dielectric losses. At low temperatures (below 500 K), the dielectric response of the materials exhibits ferroelectric relaxor behavior.

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Authors and Affiliations

  1. Scientific-Practical Materials Research Centre, Belarussian Academy of Sciences, ul. Brovki 19, Minsk, 220072, Belarus

    Yu. V. Radyush, N. M. Olekhnovich & A. V. Pushkarev

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  1. Yu. V. Radyush
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  2. N. M. Olekhnovich
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  3. A. V. Pushkarev
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Correspondence to Yu. V. Radyush.

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Original Russian Text © Yu.V. Radyush, N.M. Olekhnovich, A.V. Pushkarev, 2012, published in Neorganicheskie Materialy, 2012, Vol. 48, No. 11, pp. 1264–1268.

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Radyush, Y.V., Olekhnovich, N.M. & Pushkarev, A.V. Crystal structure and dielectric properties of (1 − x)(NaBi)1/2TiO3 · xBi(ZnTi)1/2O3 perovskite solid solutions. Inorg Mater 48, 1131–1135 (2012). https://doi.org/10.1134/S0020168512110118

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