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对γ相和α相纳米晶体Fe_2O_3的系列样品进行了X射线衍射点阵参量实验研究和计算。结合所得到的晶粒度和微结构参数，发现纳米晶体Fe_2O_3的晶粒组元中存在着晶格畸变；随着温度的升高，γ相和α相纳米晶体Fe_2O_3的点阵参量呈现出了明显的变化，其晶格畸变与晶粒度和温度有较密切的关联。
A series of X-ray diffraction lattice parameters of γ-phase and α-phase nanocrystalline Fe 2 O 3 samples were studied and calculated. According to the obtained grain size and microstructure parameters, it is found that the lattice distortion exists in the grain components of nanocrystalline Fe_2O_3. The lattice parameters of γ_ phase and α_phase nanocrystalline Fe_2O_3 appear as the temperature increases Obvious changes, the lattice distortion and grain size and temperature are more closely related.