Electrostatic model of the LiТаO3 ferroelectric
- Autores: Yatsenko A.1
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Afiliações:
- Vernadsky Crimean Federal University
- Edição: Volume 62, Nº 1 (2017)
- Páginas: 118-122
- Seção: Physical Properties of Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/190553
- DOI: https://doi.org/10.1134/S1063774516040258
- ID: 190553
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Resumo
Possible combinations of the electronic polarizability tensor components for oxygen and tantalum ions have been established based on the analysis of the refraction coefficients of LiТаO3 crystal in the far-IR region. The local electric field on structurally nonequivalent ions in the LiТаO3 unit cell was calculated within the modified point-multipole model. A combination of the electronic polarizability tensor components for oxygen and tantalum ions and their effective charges is established, which provides a good correspondence of the calculation results with the experimental data on LiТаO3 crystals obtained by 7Li nuclear magnetic resonance and 181Та nuclear quadrupole resonance and with the known value of the crystal spontaneous polarization.
Sobre autores
A. Yatsenko
Vernadsky Crimean Federal University
Autor responsável pela correspondência
Email: lab2@crimea.edu
Rússia, pr. Vernadskogo 4, Simferopol