摘要
研究了不同晶粒尺寸下钛酸铅(PbTiO3)超微粒的喇曼振动光谱,发现PbTiO3超微粒在纳米晶尺寸下最低声子模频率漂移,相关的喇曼振动峰宽化,其振动强度随晶粒尺寸发生明显变化.实验结果表明纳米晶粒子存在明显的小尺寸效应.
The Raman Speetra of PbTiO 3(PT) under different grain size have been measured. lt is observed that lower frequency phonon modes shift and relative intensity of PT Raman spectra change with different grain size. Experimental results show that there is an obvious small size effects of nano-cnystalline.
出处
《中山大学学报(自然科学版)》
CAS
CSCD
1996年第5期15-18,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广东省自然科学基金
中山大学"211工程"前沿课题资助