Room temperature ferromagnetic (In_0.95Fe_0.05)₂O₃ nanoparticles were prepared using a sol-gel method at different annealing temperatures ranging from 400 to 800 °C. X-ray diffraction and X-ray photoelectron spectroscopy results indicate that Fe has been doped into In₂O₃ lattice without any precipitation. From the nonmonotonic changes with annealing temperature in lattice constant, O 1s spectra and band gap, we analyzed the corresponding changes in oxygen vacancy concentration, which is in accordance with the nonmonotonic change in ferromagnetic properties. We believe that annealing temperature can regulate oxygen vacancy concentration effectively, which is closely related to the ferromagnetism in our samples. The mechanism of ferromagnetic coupling can be explained by the bound magnetic polaron model.

室温铁磁（在_{0 。95}的Fe _0.05）_2个ö ₃是使用在不同退火温度范围从400至800℃的溶胶-凝胶法制备纳米粒子。X射线衍射和X射线光电子能谱结果表明，Fe已被掺杂到In ₂ O ₃晶格中而没有任何沉淀。由退火温度的非单调变化得出的晶格常数为O 1 s光谱和带隙，我们分析了氧空位浓度的相应变化，这与铁磁性能的非单调变化是一致的。我们认为，退火温度可以有效调节氧空位浓度，这与样品中的铁磁性密切相关。铁磁耦合的机理可以用束缚极化子模型来解释。