BaTiO_3 超微粒-硬脂酸L-B膜的研究  

Study of Ultrafine BaTiO 3 Particles stearic Acid L B Films

作　　者：刘成林[1] 李远光[1] 钟菊花[1] 张兆奎[1] 

机构地区：[1]华东理工大学物理系

出　　处：《华东理工大学学报（自然科学版）》1997年第3期377-381,共5页Journal of East China University of Science and Technology

摘　　要：用胶体化学方法制备了ＢａＴｉＯ３超微粒，用Ｌ－Ｂ膜技术组装了文题的复合膜，用π－Ａ曲线，ＡＦＭ，紫外－可见吸收光谱和荧光光谱对其进行表征。ＢａＴｉＯ３超微粒在复合膜中是比较稳定的，其复盖度＞９０％。复合膜中的ＢａＴｉＯ３超微粒具有介电限域效应。荧光光谱具有３７２ｎｍ和３８５ｎｍ两个峰宽的发光带，激发光谱有３２５ｎｍ的峰。The aqueous sol of ultrafine BaTiO 3 particles was prepared by the colloid chemistry method.The ultrafine BaTiO 3 particles stearate multilayer was fabricated through Langmuir Blodgett technology.It was characterized by π A curve,AFM,UV visible absorption and fluorescence spectrum.The ultrafine BaTiO 3 particles were very stable and the coverage ratio surpassed 90% in the composite film.The absorption and fluorescence spectrum of ultrafine BaTiO 3 particles stearic acid were measured at room temperature.It is found that there was dielectric confinement effect.Their fluorescence was broad luminous bands with two peaks at 372nm and 385nm.The excited peak was at 325nm.

关 键 词：超微粒 制备 形貌 钛酸钡 硬脂酸 LB膜 

分 类 号：O484.1[理学—固体物理]