9BT1BNTss–x NbO–y MgO ceramics, with a molar ratio of 1: x: y, were synthesized, and their microstructure, bonding, and dielectric properties were analyzed (9BT1BNTss refers to a solid solution containing 0.9 mol BaTiO and 0.1 mol BiNaTiO). The results showed that all samples sintered at 1200 °C for 2 h exhibited core-shell structures with tetragonal and cubic phases, as well as secondary phases of BaTiO and BaTiNbO. In this study, all five formulation samples ( = 0.02–0.04; = 0.005–0.015) had a dense structure, with average grain sizes ranging from approximately 441±19 to 594±79 nm. The dielectric properties of the 9BT1BNTss–0.04 NbO–0.015 MgO sample are as follows: ε = 998 (25 °C) and 1118 (200 °C); tanδ = 1.41% (25 °C) and 33.33% (200 °C); and ΔC/C = 10.98% (T) and 12.09% (200 °C). These values met the Electronic Industries Association (EIA) X9R specifications.

中文翻译：

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BaTiO3–Bi0.5Na0.5TiO3–Nb2O5–MgO基介电陶瓷的微观结构和介电性能分析


合成了摩尔比为1:x:y的9BT1BNTss–x NbO–y MgO陶瓷，并分析了其微观结构、结合和介电性能（9BT1BNTss是指含有0.9 mol BaTiO和0.1 mol BiNaTiO的固溶体） 。结果表明，在1200℃下烧结2h的所有样品均呈现出具有四方相和立方相的核壳结构，以及BaTiO和BaTiNbO的第二相。在本研究中，所有五个配方样品（= 0.02–0.04；= 0.005–0.015）均具有致密结构，平均晶粒尺寸范围约为 441±19 至 594±79 nm。 9BT1BNTss–0.04 NbO–0.015 MgO样品的介电性能如下：ε = 998 (25 °C) 和 1118 (200 °C)； tanδ = 1.41% (25 °C) 和 33.33% (200 °C)； ΔC/C = 10.98% (T) 和 12.09% (200 °C)。这些值符合电子工业协会 (EIA) X9R 规范。