Magnetic ferroelectrics continue to attract much attention as promising multifunctional materials [1, 2]. For example, the ferrimagnetic rare earth iron garnets, R3Fe5O12, present a unique group of materials, which have... [ view full abstract ]
Magnetic ferroelectrics continue to attract much attention as promising multifunctional materials [1, 2]. For example, the ferrimagnetic rare earth iron garnets, R3Fe5O12, present a unique group of materials, which have become interesting for their novel magnetic and magneto-optical properties [3]. Among magnetic ferroelectrics, BiFeO3 is distinguished by exceptionally high transition temperatures and, thus, is considered as a prototype room-temperature multiferroic [4]. The multiferroic behaviour and related properties are known to be strongly affected not only by chemical substitution, but also by phase purity, surface microstructure and similar factors which are determined mostly by preparation technique [5].
In this study, mixed rare earth-doped bismuth ferrites Bi1-xLnxFeO3 (Ln- lanthanide; x = 0.0-1.0) were prepared by solid state reaction and an aqueous sol-gel synthesis methods. In both cases, the precursors were ground in an agate mortar and heated at different temperatures for 10 h. Different final annealing temperatures were chosen according to previously obtained results. For the characterization of obtained samples X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and other methods were used. The results obtained showed that two different synthesis routes (solid state reaction and sol-gel processing) are suitable methods for the fabrication of Bi1-xLnxFeO3.
Acknowledgements. The work has been done in frame of the project TransFerr. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 778070.
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