摘要
用改进硬脂酸溶胶－凝胶法制备了量子顺电体Ｌａ１／２Ｎａ１／２ＴｉＯ３纳米晶，用差热－热重分析和Ｘ射线衍射测试了样品的晶化过程及物相结构。
Quantum paraelectric La\-\{1/2\}Na\-\{1/2\}TiO\-3 nanocrystals have successfully been prepared by using improved sol\|gel method in which absolute alcohol and stearic acid were used as the solvent. X\|ray diffraction results show that the as\|prepared sample is a pure La\-\{1/2\}Na\-\{1/2\}TiO\-3 with an acubic perovskite\|type structure. The mean crystallite sizes were controlled by varying annealing temperatures. FTIR and Raman measurements reveal nano\|size effects on the vibration spectroscopic properties of the nanocrystalline La\-\{1/2\}Na\-\{1/2\}TiO\-3.\=
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第4期515-518,共4页
Chemical Journal of Chinese Universities
基金
河南省自然科学基金
