Synthesis of Sr_0.5Ba_0.5Nb₂O₆ by citrate gel method

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• 作者：Renu Pasricha and V. Ravi
• 关键词：Ceramics ; Oxides ; Electron microscopy ; Ferroelectricity
• 刊名：Materials Chemistry and Physics
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：94
• 期：1
• 页码：34-36
• 全文大小：88 K

文摘

A gel was formed when an aqueous solution of BaCl₂, SrCl₂, NbF₅ and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 700 °C yielded the nanocrystallites of ternary oxide, Sr_0.5Ba_0.5Nb₂O₆ (SBN) as confirmed by X-ray diffraction study (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). The room temperature dielectric constant at 1 kHz is 1000. The ferroelectric hysteresis loop parameters of these samples were also studied by a home built Sawyer–Tower circuit.