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使用ＸＲＤ、Ｍｏｓｓｂａｕｅｒ谱及化学组成分析考察了氧缺位铁酸盐ＭＦｅ２Ｏ４－δ（δ＞０，Ｍ＝Ｆｅ，Ｃｏ，Ｍｎ，Ｎｉ）的晶格常数、磁性、稳定性及还原性．结果表明，氧缺位铁酸盐ＭＦｅ２Ｏ４－δ（δ＞０）的晶格常数比ＭＦｅ２Ｏ４＋δ（δ≥０）的大，Ｍｏｓｓｂａｕｅｒ谱内磁场却更小．ＭＦｅ２Ｏ４－δ（δ＞０）随着氧缺位程度δ的增大，晶格常数增大，内磁场减小．ＭＦｅ２Ｏ４－δ在室温下空气中是不稳定的，只能在惰性气体中低温（＜６７３Ｋ）下稳定存在．ＭＦｅ２Ｏ４－δ具有较强的还原能力，在５７３Ｋ下能将ＣＯ２还原成Ｃ．
The lattice constants, magnetism, stability and reducibility of oxygen vacancies MFe2O4-δ (δ> 0, M = Fe, Co, Mn and Ni) were investigated by XRD, Mossbauer spectroscopy and chemical analysis. The results show that the lattice constant of oxygen vacancy ferrite MFe2O4-δ (δ> 0) is larger than that of MFe2O4 + δ (δ≥0) and the magnetic field in Mossbauer spectrum is smaller. MFe2O4-δ (δ> 0) With the increase of oxygen vacancy δ, the lattice constant increases and the internal magnetic field decreases. MFe2O4-δ is unstable in air at room temperature and can only exist stably under low temperature (<673K) in inert gas. MFe2O4-δ has a strong reduction ability, at 573K CO2 can be reduced to C.