Electrostatic model of the LiТаO3 ferroelectric
- Authors: Yatsenko A.V.1
-
Affiliations:
- Vernadsky Crimean Federal University
- Issue: Vol 62, No 1 (2017)
- Pages: 118-122
- Section: Physical Properties of Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/190553
- DOI: https://doi.org/10.1134/S1063774516040258
- ID: 190553
Cite item
Abstract
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.
About the authors
A. V. Yatsenko
Vernadsky Crimean Federal University
Author for correspondence.
Email: lab2@crimea.edu
Russian Federation, pr. Vernadskogo 4, Simferopol