论文部分内容阅读
对用真空蒸发技术制备的Ag MgF2 复合纳米金属陶瓷薄膜 (Ag的质量分数为 0 15、0 2 0、0 30 )的微结构及吸收光谱特性进行了研究。微结构分析表明薄膜由平均粒径约 18nm的fcc Ag纳米晶粒嵌埋于主要呈非晶态的MgF2 基体中所组成。对吸收光谱的研究表明 ,Ag纳米微粒的表面等离子共振吸收峰出现在λ =412nm～417nm波段范围内。随着Ag组分增加 ,吸收峰强度下降 ,呈现轻微红移并且逐渐宽化。
The microstructure and absorption spectra of the Ag MgF2 composite nano-metal ceramic thin films prepared by vacuum evaporation (mass fraction of Ag = 0 15,0 2 0,0 30) were studied. Microstructure analysis showed that the film was composed of fcc Ag nanocrystals with an average particle size of about 18 nm embedded in a predominantly amorphous MgF2 matrix. The study of absorption spectra showed that the surface plasmon resonance absorption peak of Ag nanoparticles appeared in the range of λ = 412nm ~ 417nm. With the increase of Ag content, the intensity of the absorption peak decreased, showing a slight red-shift and gradual broadening.