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

• Published in: Microelectronic engineering Vol. 66; no. 1; pp. 147 - 152
• Main Authors: Luo, Shaohua, Tang, Zilong, Yao, Weihua, Zhang, Zhongtai
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2003; Elsevier Science
• Subjects: Barium titanate; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Low-temperature combustion synthesis; Materials science; Nanoscale materials and structures: fabrication and characterization; Physics; Powder preparation; Tetragonal phase; Tetragonal phase; Low-temperature combustion synthesis; Barium titanate; Powder preparation
• ISSN: 0167-9317; 1873-5568
• DOI: 10.1016/S0167-9317(03)00039-X

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 3) 2–TiO(NO 3) 2–citric acid–NH 4NO 3 system. The influence of the ratio of reactants on the properties of the final products was investigated. The results showed that tetragonal BaTiO 3 with high purity was produced at low ignition temperature (∼300 °C). The crystalline size of the powder obtained is less than 50 nm. The crystal structure, crystalline size and morphology were analyzed by XRD, SEM and TEM.