Crystallization processes of SrTiO₃ films prepared by PVP-modified sol–gel method

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• 作者：Yong Peng ; Manwen Yao ; Ruihua Xiao ; Fei Li…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：1
• 页码：944-948
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

Crystallization processes of sol–gel derived SrTiO₃ films have been investigated systematically. The crystallization processes included two stages, firstly, the coordination of the cations changed from the carboxylate groups to the carbonate groups; secondly, the resulting pervskite SrTiO₃ was crystallized by the decomposition of the carbonate groups. The intermediate with carbonate groups has also been observed in the SrTiO₃ films annealed at 500 °C by the Raman peak shift near 1071 cm−1. The stoichiometry of the intermediate, close to Sr₂Ti₂O₅CO₃, has been further confirmed by the TG-DSC and XPS results.