Abstract
The powders of Bi1-xPrxFeO3 (x = 0, 0.05, 0.1) and Bi0.95Pr0.05Fe1-yMnyO3 (y = 0.05, 0.1) were prepared by hydrothermal method. The effects of Pr and Mn doping content on the structure, morphology, magnetic, and photocatalytic properties of BiFeO3 (BFO) have been studied. X-ray diffraction (XRD) demonstrated that the compounds are distorted rhombohedral perovskite structure without any other heterogeneity and structural transition. Field emission scanning electron microscope (FESEM) reflected that the surface of compounds is a dense, agglomerated sphere, and the morphology changes with the addition of Pr, Mn. Energy spectrum analysis (EDS) shows that the Bi0.95Pr0.05Fe0.95Mn0.05O3 sample is mainly composed of 5 elements (Bi, Fe, O, Pr, Mn), and the atomic ratio matches the formula well. Integrating the vibrating sample magnetometer (VSM) into the physical property measurement system (PPMS-9) shows that the introduction of Pr3+and Mn2+ ions can enhance the magnetic properties of BFO at room temperature. In addition, doping with Pr3+ and Mn2+ ions can improve the photocatalytic performance of BFO, and with the increase of Mn2+ concentration, the photocatalytic performance of BFO first rises and then decreases, and its catalytic performance is getting better and better.
Highlights
Multiferroic materials are a typical representative of multifunctional materials, combined electricity and magnetism
The X-ray diffraction (XRD) pattern of all the samples confirmed that the rhombohedral perovskite structure have R3C space group
When Pr doped BFO alone, with the increase of Pr doping concentration, the XRD diffraction peak shifted to a low angle; when Pr and Mn co-doped BFO, with the increase of Mn doping concentration, the XRD diffraction peak shifted to a higher angle offset
Summary
Multiferroic materials are a typical representative of multifunctional materials, combined electricity and magnetism. The research of multi-ferrous BiFeO3 is one of the most representative single-phase multi-iron materials, and the perovskite structure belongs to the R3c space group It is one of the few materials that has both ferroelectric and antiferromagnetic properties at room temperature, with high ferroelectric Curie temperature (850 °C) and ferromagnetic Neel temperature (370 °C), as well as narrow forbidden bandwidth and better Chemical stability, etc. Doping magnetic ions at the B site can inhibit the valence state of iron and destroy the super-exchange effect in the spin-helical structure of BFO. Ion doping is an effective method to the increase photocatalytic activity of BFO [15]. The structure, magnetic and photocatalytic activity of Pr3 + and low-cost Mn2+ co-doped BFO have been studied in detail, which have not been reported in detail so far
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
