Sol-gel processing, perovskite phase development and properties of relaxor-based thin layer ferroelectrics.

摘要

This thesis reports on the preparation and properties of thin layer ceramics in the Pb ((Zn;Crystalline phase development in sol-gel derived powders and thin layers was studied by thermal analysis and X-ray diffraction. All compositions crystallized first into a cubic pyrochlore phase. Pb;With optimized processing, thin layers in the entire PMNT system could be prepared in the perovskite structure. The most effective processing method was spin-casting, followed by rapid heat-treatment to a temperature sufficiently high for the perovskite structure to crystallize, without the formation of the pyrochlore phase. Solution additives (HNO