| Cu-MgF_2纳米金属陶瓷薄膜的微结构及吸收光谱特性研究 |
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| 引用本文： | 孙兆奇,吴桂芳,李爱侠,徐志元,孙大明.Cu-MgF_2纳米金属陶瓷薄膜的微结构及吸收光谱特性研究[J].安徽大学学报(自然科学版),2000,24(3):64-69. |
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| 作者姓名： | 孙兆奇 吴桂芳 李爱侠 徐志元 孙大明 |
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| 作者单位： | 安徽大学物理系，安徽合肥 230039 |
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| 基金项目： | 国家自然科学基金;59972001; |
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| 摘 要： | 对用蒸发技术制备的Cu -MgF2 纳米金属陶瓷薄膜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fcc -Cu纳米晶粒镶嵌于主要呈非晶态的MgF2 基体中所组成 ,晶粒的平均粒度约为 1 4～ 1 6nm。Cu -MgF2 纳米金属陶瓷薄膜在 2 0 0～ 80 0nm波段内的吸收光谱表明 :随着波长增加 ,吸收减小 ;Cu纳米晶粒的表面等离子共振吸收峰出现于 560nm处 ;短波长区呈现较强的Cu的带间跃迁吸收。用三维弥散系统的Maxwell-Garnett理论对Cu -MgF2 复合体系的实验吸收光谱特性作出了解释。
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| 关 键 词： | 纳米金属陶瓷薄膜 吸收光谱 MG理论解释 |
| 文章编号： | 1001-2162(2000)03-0064-06 |
Microstructure and Absorption Spectrum of Cu-MgF2 Cermet Film |
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| SUN Zhao-qi,WU Gui-fang,LI Ai-Xia,XU Zhi-yuan,SUN Da-ming.Microstructure and Absorption Spectrum of Cu-MgF2 Cermet Film[J].Journal of Anhui University(Natural Sciences),2000,24(3):64-69. |
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| Authors: | SUN Zhao-qi WU Gui-fang LI Ai-Xia XU Zhi-yuan SUN Da-ming |
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| Abstract: | The microstructure and absorption spectrum of Cu-MgF2 cermet film prepared by evaporation were investigated. The results show that Cu-MgF2 cermet film is composed of mainly amorphous MgF2 matrix with embedded fcc-Cu nanograins, with a mean size of 14～16nm. The results also show that the absorption of the film, in the range of 200～800nm, decreases as the wavelength increases. Surface plasmon resonance absorption peak at 560nm and interband transition absorption of Cu in shorter wavelength range were observed. By employing Maxwell-Garnett theory for a 3D dispersion system, the experimental absorption characteristics were interpreted. |
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| Keywords: | Cu-MgF2 cermet film absorption spectrum MG theory |
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