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

被引:36
作者
Luo, SH [1 ]
Tang, ZL [1 ]
Yao, WH [1 ]
Zhang, ZT [1 ]
机构
[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
关键词
low-temperature combustion synthesis; barium titanate; tetragonal phase; powder preparation;
D O I
10.1016/S0167-9317(03)00039-X
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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(NO3)(2)-TiO(NO3)(2)-citric acid-NH4NO3 system. The influence of the ratio of reactants on the properties of the final products was investigated. The results showed that tetragonal BaTiO3 with high purity was produced at low ignition temperature (similar to300 degreesC). 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. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:147 / 152
页数:6
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