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首页> 外文会议>Ferroelectric Thin Films XII >Comparison of Titanium Precursors in the Sol-Gel Synthesis of Pb_(0.5)Ba_(0.5)YiO_3 Powders and Thin Films
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Comparison of Titanium Precursors in the Sol-Gel Synthesis of Pb_(0.5)Ba_(0.5)YiO_3 Powders and Thin Films

机译：溶胶-凝胶法合成Pb_（0.5）Ba_（0.5）YiO_3粉末和薄膜中钛前体的比较

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摘要

Two sol-gel processes for producing Pb_(1-x)Ba_xTiO_3 (PBT), a ferroelectric material of interest for sensor and actuator applications, are investigated. Each system incorporates lead nitrate and barium acetate as metal sources and ethylene glycol as a solvent. Diethanolamine is used as a chelating agent for titanium isopropoxide or titanium butoxide. Precursor chemistry was systematically varied and the resulting sols and powders were studied using TGA/DSC, FTIR, and XRD. Thin films were prepared using both precursor sources by spin coating onto single crystal (100) MgO. Spin speed and pyrolysis temperature were optimized to produce oriented thin films with thicknesses of up to approximately 500nm. Sols incorporating titanium isopropoxide and a large excess of diethanolamine were particularly stable against hydrolysis.
机译：研究了两种用于生产Pb_（1-x）Ba_xTiO_3（PBT）（一种用于传感器和执行器的重要铁电材料）的溶胶-凝胶工艺。每个系统都将硝酸铅和乙酸钡作为金属源，并将乙二醇作为溶剂。二乙醇胺用作异丙醇钛或丁醇钛的螯合剂。前体化学反应系统地变化，并且使用TGA / DSC，FTIR和XRD研究所得的溶胶和粉末。使用两种前驱物源，通过旋涂到单晶（100）MgO上制备薄膜。优化了自旋速度和热解温度，以生产厚度高达约500nm的取向薄膜。掺有异丙醇钛和大量过量的二乙醇胺的溶胶对水解特别稳定。

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