Investigation of the Intrinsic Defects of LiTaO3 Crystals by NMR Spectroscopy


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Abstract

The nuclear magnetic resonance (NMR) of 7Li and 6Li nuclei in a LiTaO3 single crystal sample of congruent composition has been experimentally investigated. It is found that there are weak side lines in the NMR spectra of 7Li nuclei, which have not been observed before; these lines are due to cation sublattice defects. A computer simulation of NMR spectra has revealed the most likely configuration of \(({\text{Ta}}_{{{\text{Li}}}}^{{{\text{5}} + }} + {\text{4}}{{V}_{{{\text{Li}}}}})\) defect complexes that are present in nonstoichiometric LiTaO3 crystals.

About the authors

A. V. Yatsenko

Crimean Federal University

Author for correspondence.
Email: yatsenkoav@cfuv.ru
Russian Federation, Simferopol, 295007

M. N. Palatnikov

Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center,
Russian Academy of Science

Email: yatsenkoav@cfuv.ru
Russian Federation, Apatity, Murmansk oblast, 184209

N. V. Sidorov

Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center,
Russian Academy of Science

Email: yatsenkoav@cfuv.ru
Russian Federation, Apatity, Murmansk oblast, 184209

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