Investigating the effect of Pr doping BiFeO3 on the microwave absorption and magnetic properties

Bi1-xPrxFeO3 material with perovskite structure was prepared using organic tartaric acid-assisted sol-gel self-propagating combustion method to obtain high-efficiency microwave absorption materials. The influence of the introduction of Pr on dielectric properties and permeability was further studied. After 15% Pr introduced, the lowest reflection absorption loss reaches -32.34 dB, but the absorption bandwidth is only 2.25 GHz. When Pr is 5%, the lowest reflection absorption loss value of-27.31 dB is obtained, and the effective bandwidth which below-10 dB is 3.41 GHz. The structural changes in the process of Pr replacing Bi were analyzed to explore the properties of BPFO perovskite. The influence of strong interaction force, residual magnetization, and natural resonance of ceramic nanoparticles on microwave absorption performance was explored. This work supplies a reliable candidate material for making up electromagnetic attenuation ceramic materials with excellent properties.

Automated summary

In this study, a Bi1-xPrxFeO3 material with perovskite structure was prepared using the sol-gel self-propagating combustion method. The introduction of Pr was found to influence the dielectric properties and permeability of the material. The results showed that the material with 15% Pr had the lowest reflection absorption loss but a narrow absorption bandwidth.