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- Article name
- Structure and dielectric properties of composition materials based on bismuth ferrite and lithium niobate
- Authors
- VERBENKO I. A., , ilich001@yandex.ru, Research Institute of Physics of Southern Federal University, Rostov-on-Don, Russia
SHILKINA L. A., , lid-shilkina@yandex.ru, Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia
REZNICHENKO L. A., , lareznichenko@sfedu.ru, Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia
GLAZUNOVA E. V., , kate93g@mail.ru, Southern Federal University, Research Institute of Physics, Rostov-on-Don, Russia
NAZARENKO А. V., , nazarav@ssc-ras.ru, Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
LYMAR D. V., , m1494dima@mail.ru, Research Institute of Physics Southern Federal University, Rostov-on-Don, Russia
- Keywords
- bismuth ferrite / pyrochlore structure / dielectric properties
- Year
- 2025 Issue 2 Pages 40 - 48
- Code EDN
- PSZOBY
- Code DOI
- 10.52190/2073-2562_2025_2_40
- Abstract
- The article presents the results of X-ray diffraction analysis, microstructure study and dielectric characteristics of solid solutions of the (1-x)BiFeO3-xLiNbO3 system. The present study demonstrates that the structure of solid solutions, dependent on LiNbO3 addition, undergoes multiple transitions from perovskite (x = 0.0) to pyrochlore (x = 0.4 and x = 0.5) and further to pseudoilmenite structure (x = 1.0). The character of the microstructure indicates that sintering takes place with the participation of liquid phases. Anomalies in the ɛ′/ɛ0 dependences for (1-x)BiFeO3-xLiNbO3 ceramics at x = 0.0 and 0.1 obey the Arrhenius law, indicating the occurrence of Maxwell-Wagner relaxation due to the movement of oxygen vacancies. The dielectric properties of the solid solutions of the study system are shown to be dependent on composition, with evidence of thermal stability ranging from room temperature to 550 K. This suggests the potential for utilisation in devices operating at high frequencies.
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