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Synthesis and characterization of nanocrystalline barium strontium titanate

Golmohammad M., Nemati Z. A., Faghihi Sani M. A.

Materials Science Poland

2010

Vol. 28, No. 2

421--426

Barium strontium titanate (BST) was prepared via the simple sol-gel method by using tetrabutyl titanate, ethanol, citric acid and ethylene glycol as starting materials. Thermogravimetry and differential thermal analysis were used to examine the behaviour of the xerogel. The particle size of BST was approximately 21 nm, as calculated by the X-ray diffraction and confirmed by transition electron microscopy for the calcination temperature of 750 °C. It was found that the particles of BST powders calcined at 750 °C were smaller and more homogeneous and uniform than those obtained at 800 °C.