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采用溶胶－凝胶法制备了（Ｐｂ１－ｘＣａｘ）ＴｉＯ３（ＰＣＴ（ｘ））纳米晶粉和纳米薄膜。变温拉曼光谱显示ＰＣＴ（０）和 ＰＣＴ（２０）从铁电四方相向顺电立方相的转变温度分别降低至４３０℃和３３０℃；结果同时表明ＰＣＴ（０）和ＰＣＴ（２０）薄 膜的声子频率发生一定程度的红移或蓝移，这归因于纳米材料掺杂引起的诱导效应和晶粒尺寸效应。
(Pb1-xCax) TiO3 (PCT (x)) nanocrystalline powders and nanostructured films were prepared by sol-gel method. The temperature-dependent Raman spectra showed that the transition temperature of PCT (0) and PCT (20) decreased from 430 ℃ to 330 ℃, respectively. The results also showed that the phonons of PCT (0) and PCT (20) A certain degree of redshift or blue shift of the frequency was attributed to the induction effect and grain size effect caused by the doping of the nanomaterials.