中文摘要：

本文略述了近来用高分辨电子显微术及其模拟技术,解析Ta2O5和（Ta2O5）1-x（TiO2）x的晶体结构的进展,并揭示了（Ta2O5）1-x（TiO2）x固溶体中由于Ti离子有序占据八面体位置所形成的调制结构和介电性能之间的关联。

英文摘要：

　This article introduced the recent progresses in the crystalline structural determination of Ta2O5 and （Ta2O5）1-x（TiO2）x using TEM techniques,including HREM and the corresponding simulations.The crystalline structural details of Ta2O5 and（Ta2O5）1-x（TiO2）x suggest the correlations between the ordered structure and the high dielectric constant in（Ta2O5）0.92（TiO2）0.08 system.