Abstract
Ba0.5Sr0.5TiO3 powders were prepared via a new sol-gel method with titanium oxide, strontium nitrate, and barium nitrate as raw materials. The microstructure and electrical properties were characterized by field scanning electron microscopy, x-ray diffraction and impedance analyser. When the PH = 4, n (CA): n (metal oins) = 3:1 and the synthesis temperature is 800 °C, Ba0.5Sr0.5TiO3 powders were obtained with good crystallinity. BST ceramics sintered at 1250 °C for 2h exhibited good dielectric properties (εr = 930, tanδ = 0.08) at room temperature and f =1 KHz. The relatively low sintering temperature and excellent dielectric properties would make these ceramics promising for applications in electronics.
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