用水热法制得了在室温大气环境下稳定的半导体SnO_2纳米材料。用X 射线粉晶衍射、透射电镜、高分辨电镜及M(?)ssbauer 谱等研究了不同压力下的纳米SnO_2的特性。随着压力增加,所有谱线都有明显展宽,其特性明显区别于一般的多晶SnO_2。用残缺态的概念解释了实验结果。
Nanocrystalline material SnO_2 was prepared by hydrothermal method and hasbeen proved to be stable in room temperature atmosphere.X-ray diffraction,transmission elec-tron microscopy,high resolution electron microscopy and M(?)ssbauer spectroscopy were use
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