Wet chemical synthesis of pure LiNbO₃ powders from simple niobium oxide Nb₂O₅

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• 作者：Meinan Liu ; Dongfeng Xue ; Chao Luo
• 关键词：Lithium niobate ; Niobium oxide ; Wet chemical synthesis
• 刊名：Journal of Alloys and Compounds
• 出版年：2006
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：21 December 2006
• 卷：426
• 期：1-2
• 页码：118-122
• 文件大小：602 K

摘要

Lithium niobate powders are synthesized by a wet chemical method using simple niobium oxide and lithium hydroxide as raw materials. In the synthesis process, niobium oxide is first activated into niobic acid by some chemical reactions; then citric acid coordinates with niobic acid to prepare stable Nb–citric acid complex, which further reacts with lithium hydroxide to form lithium niobate powders. X-ray diffraction, infrared spectra, and scanning electron microscopy are used to characterize the quality of the obtained LiNbO₃ powders. The present work shows that the proper sintering temperature for lithium niobate gels should be around 600 °C, if pure lithium niobate are available.