Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 312, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2022.123216
Keywords
Bismuth ferrite; Europium; Doping; Mossbauer spectroscopy; Magnetometry; X-ray diffraction
Funding
- Strategic Academic Leadership Pro-gram of Kazan Federal University
- Ministry of Science and Higher Education of Russian Federation [0671-2020-0050]
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This study reports the effect of doping with europium ions on the magnetic properties of bismuth ferrite. Through various methods, the researchers gained a deeper understanding of the mechanisms behind the changes in magnetic response caused by doping. It was found that within a certain doping range, the crystal structure parameters remained stable, but beyond that range, the crystal structure changed. Additionally, the magnetic properties were found to be correlated with the crystal structure.
This paper reports the results of investigations the effect of doping of bismuth ferrite with europium ions on its magnetic properties. Combined studies by structural (X-ray diffraction), local probe (Eu-151, Fe-57 Mossbauer spectroscopy), and bulk magnetometry (vibration sample magnetometry) methods allow a deeper understanding of the magnetic response modification mechanisms in the Bi1-xEuxFeO3 system. It was found that Eu doping in the range of x < 0.15 leads to smooth variation of R3c crystal structure parameters, but for x > 0.15 crystal structure changes to Pn2(1)a. Bulk and local magnetic properties are also sensitive to these modifications in the crystal structure. For instance, BiFeO3 shows antiferromagnetic response, whereas bulk ferromagnetic response appears in Bi0.8Eu0.2FeO3.
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