纳米晶La_2O_3的制备及其红外吸收特性的研究  

A Study of Preparation and Infrared Absorbency of La_2O_3 Nanocrystals

作　　者：王春秀[1] 李福利[1] 

机构地区：[1]首都师范大学物理系光学研究所,北京100037

出　　处：《光谱学与光谱分析》2006年第5期846-849,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(10174048)资助项目

摘　　要：采用硬脂酸凝胶法制备了La2O3纳米晶,用X射线粉末衍射仪（XRD）,透射电子显微镜（TEM）对La2O3纳米晶的粒径和形貌进行了表征.研究了不同热处理温度下纳米La2O3的红外吸收特性,结果表明,La2O3纳米晶的吸收峰的宽化、吸收峰发生蓝移和红移现象,同时La2O3纳米晶在1 000～1700 nm之间吸收较好,有可能用作激光隐身涂料的吸收剂.Nanocrystals were prepared by stearic acid gel method. The structure and morphology of nanocrystals were characterized by X-ray powder diffraction （XRD）, transmission electron microscope（TEM） and infrared spectra. Experimental results show that the absorption peaks of La2O3 extendwith their blue shift or red shift. The absorption of La2O3 nanocrystals is good in the wavelength range of 1 000 to 1 700 nrn, where La2O3 nanocrystals may serve as a kind of absorbent of laser camouflage material.

关 键 词：LA2O3 硬脂酸凝胶法 红外吸收 激光隐身材料 

分 类 号：O433.5[机械工程—光学工程]