会议论文 详细信息
Wet chemical synthesis of BaTiO3 powders and characteristics of the sintered ceramics
作者单位：S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510640, Peoples R China
会议名称：FERROELECTRICS
摘 要：The submicron, tetragonal and pure barium titanate (BT) powders were produced in a polybasic acid chelating Sol-Gel process by using citric acid as a chalet with titanium, Experiments show that the ceramics from the Sol-Gel derived powders show a single-crystal-like ferroelectric behavior with a sharp tetragonal-rhombohedral (T-R) phase transition. A hydrothermal technique was employed to fabricate BT powders for industrial applications by using as-prepared titanium hydroxide and barium hydroxide as starting materials. Nano-crystal, cubic and tetragonal BT powders form at 100degreesC and temperatures higher than 150degreesC respectively. The ferroelectric properties of the powders and ceramics were dicussed in this paper.
关 键 词：barium titanate Sol-Gel ferroclectric hydrothermal phase transition dielectric constant
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