All the samples have been characterized by XRD, FT-IR, VSM to research the impact of the different divalent ion Mg2+, Ni2+ and Co2+ on the magnetism of the spinel ferrite.

• 采用XRD、FT-IR、VSM（振动样品磁强计）等分析手段进行分析和表征，研究Mg2+、Ni2+、Co2+不同离子的引入对形成的尖晶石型铁氧体磁学性能的影响。