Determination of the maximum Ca content in La2-xCaxZr2O7 /- delta by XRD intensity ratio

作者：Tao, Zetian^*; Hou, Guihua; Xu, Ning

来源：Ceramics International, 2014, 40(2): 3823-3826.

DOI：10.1016/j.ceramint.2013.08.046

• Ionic conductivity
• Ceramics
• Inorganic compounds
• Sol-gel chemistry
• X-ray diffraction

Complex oxides La2-xCaxZr2O7 /- delta (x=0.06-0.10) were prepared by a modified Pechini method and a novel strategy based on the X-ray diffraction intensity ratio was developed to determine the maximum Ca content in La2-xCaxZr2O7 /- delta. Computer simulation predicted that the intensity ratio of (662) and (331) reflections for La2-xCaxZr2O7 /- delta increased with the increasing Ca content x. XRD analysis showed that with increasing x until 0.08, the ratio increased as predicted, then leveled off with further increase of x. An abrupt change in electrical conductivity was also observed at x of 0.08. It was concluded that the maximum Ca content lay in 0.08 for La2-xCaxZr2O7 /- delta.

• 出版日期2014-3
• 单位盐城工学院