Gas-sensitive composite nanocrystalline SnO 2/Fe 2O 3 was prepared by coprecipitation method. Its microstructure has been investigated by XRD(X-ray diffraction) and M?ssbauer spectroscopy.

• 用共沉淀法制备了SnO2/FeO3 纳米复合粉体，用X 射线衍射（XRD） 、M?ssbauer 谱研究了它的物相、晶粒度及变化过程。