Abstract A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750 °C yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000 °C), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.

中文翻译：

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一种制备 BaNb2O6 的共沉淀技术

摘要 采用草酸铵和氢氧化铵的混合物在碱性条件下将钡和铌离子共沉淀为草酸钡和氢氧化铌。这种在 750 °C 下煅烧的前体产生了 BaNb2O6 陶瓷。与传统固态方法 (1000 °C) 制备的温度相比，这是一个低得多的温度，据报道用于形成 BaNb2O6。透射电子显微镜 (TEM) 研究表明，煅烧粉末的平均粒径为 100 nm。发现 1 kHz 的室温介电常数为 1100。还研究了这些样品的铁电磁滞回线参数。