Structural and Magnetic Transitions in Bi0.9La0.1FeO3: The role of Post-Synthesis Annealing

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Published: Oct 29, 2026
DOI: https://doi.org/10.12693/APhysPolA.150.S56
Keywords:
bismuth ferrite, multiferroics, spin cycloid, rare-earth doping

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K. Siedliska
Lublin University of Technology, Division of Electronics and Information Technology, Nadbystrzycka 38A, 20-618 Lublin, Poland
T. Szumiata
Casimir Pulaski Radom University, Department of Physics, Stasieckiego 54, 26-600 Radom, Poland
R. Panek
Lublin University of Technology, Department of Geotechnics, Nadbystrzycka 40, 20-618 Lublin, Poland
T. Pikula
Lublin University of Technology, Division of Electronics and Information Technology, Nadbystrzycka 38A, 20-618 Lublin, Poland

Abstract

The effect of annealing temperature on the structure and magnetic properties of Bi0.9La0.1FeO3 prepared by the sol–gel method was investigated. X-ray diffraction results showed that all samples primarily crystallize in the rhombohedral R3c phase, while lower annealing temperatures reduce the average crystallite size and cause a small increase in the cubic Pm3m contribution. Mössbauer spectroscopy indicated that the cycloidal magnetic component is more pronounced in the spectra for samples annealed at higher temperatures, whereas the lowest-temperature sample shows stronger size-related effects. Magnetic measurements confirmed an increase in magnetization as the annealing temperature decreased. These results show that post-synthesis annealing is an important factor for controlling the structural and magnetic behavior of La-doped BiFeO3.

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[1]
K. Siedliska, T. Szumiata, R. Panek, and T. Pikula, “Structural and Magnetic Transitions in Bi0.9La0.1FeO3: The role of Post-Synthesis Annealing”, Acta Phys. Pol. A, vol. 150, no. 1-3, p. S56, Oct. 2026, doi: 10.12693/APhysPolA.150.S56.
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Vol. 150 No. 1-3 (2026): Selected papers presented at the 14th Polish Nationwide Mössbauer Spectroscopy Seminar (OSSM'2026)
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