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采用钛酸丁脂和醋酸铅和溶胶凝胶法制备了纳米PbTiO3粉体。利用扫描电镜观察了经不同温度烧结后常温下粉体形貌及晶粒尺寸,得到不同尺寸(5 0～1 0 0nm)的纳米粉体。同时观察了升温条件下的温致拉曼光谱,分析了不同温度热处理后粉体的相,高温原位拉曼光谱表明了烧绿石相是升温过程中四方相PbTiO3向立方相结构转变必须经过的过渡相。另外,对高温下挥发的粉体进行研究发现,煅烧PbTiO3粉体可以得到不同尺寸的烧绿石相结构粉体
Nanometer PbTiO3 powder was prepared by using titanate titanate, lead acetate and sol-gel method. Scanning electron microscopy was used to observe the powder morphology and grain size at different temperatures after sintering at different temperatures to obtain nano-sized powders with different sizes (50 ~ 100 nm). The temperature-induced Raman spectra of the tetragonal tetragonal PbTiO3 during the pyrochlore phase transformation are also analyzed. The phase and high temperature in situ Raman spectra of the powders after heat treatment at different temperatures are analyzed. The transition phase. In addition, the high temperature volatile powder found that calcined PbTiO3 powder can be obtained in different sizes pyrochlore phase structural powder