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Influence of Synthesis Method and the Precursor on the Preparation of Barium Titanate Nano Particles

机译:合成方法和前驱体对钛酸钡纳米粒子制备的影响

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Different synthesis routes and different starting precursors can have different effects upon the properties of materials. In this paper, two different methods: solid state method, sol-gel method has been used to prepare BaTiO3 powders. BaCO3, Ba(OH)2.8H2O and [CH3COO]2Ba were used as barium precursor and TiO2, Ti[OCH[CH3]2]4] as titanium precursor. With the help of thermal gravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscope (SEM), the powder characterization has been compared. The results show that sol-gel derived powders are having larger grain growth compared to solid state powders irrespective of starting precursors. It is also evident that dielectric constant value is a function of grain size. Another important findings are starting precursor also plays a major role especially for the grain size and dielectric constant value. The barium hydroxide octahydrate precursor was showing better result than barium acetate precursor.
机译:不同的合成路线和不同的起始前体会对材料的性能产生不同的影响。本文采用两种不同的方法:固态法,溶胶-凝胶法制备了BaTiO3粉体。 BaCO3,Ba(OH)2.8H2O和[CH3COO] 2Ba被用作钡前体,而TiO2,Ti [OCH [CH3] 2] 4]被用作钛前体。借助热重分析(TGA),X射线衍射(XRD)和扫描电子显微镜(SEM),对粉末的表征进行了比较。结果表明,与固态粉末相比,溶胶-凝胶衍生的粉末具有更大的晶粒生长,而与起始前体无关。同样明显的是,介电常数值是晶粒尺寸的函数。另一个重要发现是起始前体也起着重要作用,尤其是对于晶粒尺寸和介电常数值。氢氧化钡八水合物前体显示出比乙酸钡前体更好的结果。

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