Abstract
Three novel Ba5LnNiTa9O30 (Ln = La, Nd and Sm) ceramics were prepared and characterized in the BaO-Ln2O3-NiO-Ta2O5 system. All three compounds adopted the filled tetragonal tungsten bronze (TB) structure at room temperature. The present ceramics exhibited relaxor behavior, and the Curie temperature (at 10kHz) were −130, −80 and −45°C for Ba5LaNiTa9O30, Ba5NdNiTa9O30, and Ba5SmNiTa9O30 respectively. At room temperature, Ba5LnNiTa9O30 ceramics have a high dielectric constants in the range 102∼118, a low dielectric loss in range 0.0019∼0.0036, and the temperature coefficients of the dielectric constant (τɛ) in the range −320∼−460 ppm°C−1 (at 1 MHz).
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Fang, L., Zhang, H., Huang, T.H. et al. Characterization and dielectric properties of Ba5LnNiTa9O30 (Ln = La, Nd and Sm) ceramics. J Electroceram 16, 135–139 (2006). https://doi.org/10.1007/s10832-006-4299-7
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DOI: https://doi.org/10.1007/s10832-006-4299-7