在真空中用蒸发沉积的方法制备了埋藏有Ag或Au纳米粒子的稀土氧化物复合薄膜:Ag-La2O3、Ag-Nd2O3、Ag-Sm2O3、Au-La2O3、Au-Nd2O3和Au-Sm2O3.通过光吸收实验研究,发现这些薄膜都在光波长310～1200nm内出现吸收峰,Ag纳米粒子-稀土氧化物薄膜和Au-Sm2O3薄膜的光吸收峰位置随Ag或Au粒子粒径和数量的增加产生红移;而Au-La2O3和Au-Nd2O3薄膜的光吸收随Au量的增大变为金属性光吸收.分析表明,Ag或Au粒子与稀土氧化物之间的相互作用是影响光吸收峰位置的主要原因.
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