Abstract The synthesis of bismuth titanate Bi4Ti3O12 (BiT) is performed via a novel solid state reaction. The reaction is designed to control the stoichiometric content of the highly volatile element, i.e. Bi. The chemical route consists in trapping bismuth oxide colloids in a stabilized titanium based sol gel solution. The resulting colloidal-solution hybrid ink can be processed via various ceramic processes. After gelation of TiO2 in the sol-gel component the mixture reacts at high temperature (850 °C) to yield the BiT phase. The obtained material is c-axis oriented, and its lattice parameters, shrinkage and density matches the pure Bi4Ti3O12 phase. The sintered material exhibits enhanced higher dielectric constant (2 3 2) than usually reported for this phase.

中文翻译：

---

通过新型混合固态反应合成 Bi 4 Ti 3 O 12 的化学计量控制

摘要 钛酸铋 Bi4Ti3O12 (BiT) 的合成是通过一种新的固态反应进行的。该反应旨在控制高挥发性元素（即 Bi）的化学计量含量。化学途径包括在稳定的钛基溶胶凝胶溶液中捕获氧化铋胶体。由此产生的胶体溶液混合油墨可以通过各种陶瓷工艺进行处理。溶胶-凝胶组分中的 TiO2 凝胶化后，混合物在高温 (850 °C) 下反应生成 BiT 相。所得材料为c轴取向，其晶格参数、收缩率和密度与纯Bi4Ti3O12相匹配。烧结材料表现出比通常报道的该相更高的介电常数 (2 3 2)。