Study on the influence of ion doping on the crystal structure and magnetic properties of YFeO₃

A series of pure phase YFeO₃ sample powders doped with Eu³⁺ and Nd³⁺ were synthesized by sol-gel method. The influence of different ions doping on the crystal structure and magnetic properties of YFeO₃ were investigated. The prepared sample powders were characterized by powder x-ray diffractometer, scanning electron microscope, energy dispersive spectrometer, Fourier transform infrared spectrometer, differential thermal analyzer and vibrating sample magnetometer. The results demonstrate that all sample powders are pure phase orthogonal perovskite structures, the crystal structure and the magnetization have changed. The lattice parameters and the saturation magnetization increases with the increase of ion radius or ion concentration in single doping system. In the case of double doping, the influence of the crystal structure and magnetic properties of YFeO₃ is more complicated than that of single doping according to the change of ions concentration. (paper)