纳米SnO_2材料的穆斯堡尔谱研究

MSSBAUER STUDY OF NANOCRYSTALLINE SnO_2 MATERIALS

通过X射线衍射,透射电子显微镜和穆斯堡尔谱测量,确定了在本研究中用水热法制备的半导体SnO_2材料为纳米材料,实验给出该材料的结构特点和Sn原子核的超精细参量,并发现600℃时纳米的SnO_2会转变成晶态大颗粒的SnO_2。

X-ray diffraction, transmission electron microscopy and Mossbauer spectroscopy were used to verify nanocrystalline state of the SnO2 materials prepared by hydrothermal growth, The hyperfine parameters of Sn atom and relation between it and temperature have been measured by Mossbauer spectroscopy. It has been revealed that nanocrystalline SnO2 will cover to crystalline SnO2 at 600℃.