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本文在２８８Ｋ和３７８Ｋ测定了不同Ｌａ含量Ｐｂ１－ｘＬａｘＴｉ１－ｘ／４Ｏ３纳米晶的拉曼光谱，同时在室温条件下测定了不同晶粒尺寸的Ｐｂ０．９Ｌａ０．１Ｔｉ０．９７５Ｏ３纳米晶的拉曼光谱，研究了Ｌａ含量和晶粒尺寸对各声子模频率的影响规律，讨论了影响峰形、峰位和峰宽的因素。
Raman spectra of Pb1-xLaxTi1-x / 4O3 nanocrystals with different La contents were measured at 288K and 378K, and the Raman spectra of Pb0.9La0.1Ti0.975O3 nanocrystals with different grain sizes were measured at room temperature. The effects of La content and grain size on the phonon frequencies were studied. The factors influencing the peak shape, peak position and peak width were discussed.