Low-temperature combustion synthesis and characterization of nanosized tetragonal barium titanate powders

✍ Scribed by Shaohua Luo; Zilong Tang; Weihua Yao; Zhongtai Zhang

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 317 KB
• Volume: 66
• Category: Article
• ISSN: 0167-9317
• DOI: 10.1016/s0167-9317(03)00039-x

✦ Synopsis

Nanosized tetragonal barium titanate has been directly prepared by low-temperature combustion synthesis process (LCS). According to thermochemical calculations of propellant chemistry theory, the optimum molar ratio of reactants was obtained with the Ba(NO ) -TiO(NO ) -citric acid-NH NO system. The influence of 3 2 3 2 4 3 the ratio of reactants on the properties of the final products was investigated. The results showed that tetragonal BaTiO with high purity was produced at low ignition temperature ( | 300 8C). The crystalline size of the 3 powder obtained is less than 50 nm. The crystal structure, crystalline size and morphology were analyzed by XRD, SEM and TEM.