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惰性气体离子注入铝镁尖晶石合成金属纳米颗粒的探索
Synthesis of metallic nanoparticles in spinel via defects induced by the inert-gas-ion implantation
【摘要】 实验在表面蒸镀了金属(Cu,Au)薄膜的尖晶石(MgAl2O4)样品中注入惰性气体离子(Ar,He),随后对注入样品进行了退火处理.在紫外可见光谱上观察到了由于金属纳米颗粒存在引起的较强的表面等离子体共振吸收峰,提供了材料中金属纳米颗粒形成的证据.采用这种方法在材料中引入金属纳米颗粒,发现影响金属纳米颗粒形成的因素除了退火温度外,金属薄膜厚度的影响不可忽略.
【Abstract】 Spinel specimens deposited with a thin heavy metal(Cu,Au) film were implanted with inert-gas-ions and annealed in vacuum subsequently.The surface-plasmon-resonance-absorbance peak corresponding to metallic nanoparticles in the dielectric matrix was observed in the ultraviolet-visible absorbance spectra,indicating metallic nanoparticles were formed in the spinel specimens.The influence of the thickness of the metallic film deposited on the spinel specimen surface on the nanoparticle formation is evident besides the effect of annealing temperature.
【Key words】 metal nanoparticle； ion implantation； inert gas ion； ultraviolet-visible spectrometry；
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2009年01期
- 【分类号】O481
- 【被引频次】1
- 【下载频次】192