Synthesis of Nanocrystalline LaAlO3 Powders by W/O Microemulsion Method
Pure nanocrystalline LaAlO<,3> powders were synthesized by W/O microemulsion consisting of water, Tween-80 (surfactant), n-Hexyl alcohol (cosurfactant), and cyclohexane (oil). Precursor hydroxides were precipitated in the aqueous cores of W/O microemulsions and then separated and calcined to obtain nanocrystalline LaAlO<,3> powder. The decomposition behavior of the precursors hydroxides were studied by thermogravimetry analysis (TGA). The precursor hydroxides were calcined at different temperatures and the phase evolution was studied by X-ray powder diffraction (XRD). And the morphology of LaAlO<,3> powder was studied by transmission electron microscopy (TEM). The crystallite size was less than 50nm and the shape of the particle is approximately spherical.
microemulsion synthesis nanoparticles LaAlO<,3> rare earths
Tian Zhongqing(田中青) Huang Weijiu(黄伟九) Liang Yijing(梁依经)
School of Materials Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
33-36
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）