Effect of modifiers on the structure and polarization state of lithium sodium niobate ceramics
K.V. Patsuev, O.V. Malyshkina, A.I. Ivanova
Tver State University
DOI: 10.26456/pcascnn/2025.17.118
Original article
Abstract: In this work, ceramic Li0,1Na0,9NbO3 samples (pure and with modifying additives (5%) SrTiO3 or LiTaO3) were obtained by solid-phase synthesis. If the grain size of pure lithium sodium niobate and modified (5% of SrTiO3) is practically the same, then the inclusion (5% of LiTaO3) in the composition of Li0,1Na0,9NbO3 ceramics leads to a significant spread in the grain size. In this case, grains of several times larger size are released. Based on analysis of the elemental composition, it was established that the inclusion of SrTiO3 and LiTaO3 modifiers in the composition of Li0,1Na0,9NbO3 differs significantly. In the first case (for SrTiO3), we can talk about the homogeneity of inclusion at the nanostructural level, whereas LiTaO3, despite its presence throughout the entire volume of the sample, is included in the composition of Li0,1Na0,9NbO3 in blocks. Measurement of pyroelectric properties showed that only the introduction of SrTiO3 (5%) as a modifier leads to the possibility of obtaining a uniformly polarized state in the LNN ceramic sample, which is important for practical application.
Keywords: piezoelectric ceramics, lithium sodium niobate, lead-free materials, modifiers, grain structure, permittivity pyroelectric effect, polarization homogeneity
- Kirill V. Patsuev – 4th year postgraduate student, Tver State University
- Olga V. Malyshkina – Dr. Sc., Full Professor, Head of the Department of Computer Security and Mathematical Control Methods, Tver State University
- Alexandra I. Ivanova – Ph. D., Docent of the Applied Physic Department, Tver State University
For citation:
Patsuev K.V., Malyshkina O.V., Ivanova A.I. Vliyanie modifikatorov na strukturu i sostoyanie polyarizatsii keramiki niobata litiya-natriya [Effect of modifiers on the structure and polarization state of lithium sodium niobate ceramics], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2025, issue 17, pp. 118-124. DOI: 10.26456/pcascnn/2025.17.118. ⎘
Full article (in Russian): download PDF file
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