What question did this study set out to answer?

Determine the electric field gradient at the lithium site and characterize chemical bonding in ferroelectric lithium niobate and related solid solutions.

May 15, 1967The Journal of Chemical Physics

NMR Study of Ferroelectric LiNbO3 and LiTaO3. I

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Authors

GPG. E. PetersonAT&T (United States)PBP. M. BridenbaughAT&T (United States)PGP. Green

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Implication

Spectroscopic analysis demonstrates covalent bonding in lithium niobate crystals, highlighting partial ionic charge distributions in ferroelectric materials.

Key Points

Determine the electric field gradient at the lithium site and characterize chemical bonding in ferroelectric lithium niobate and related solid solutions.
Measured 7Li and 93Nb nuclear magnetic resonance spectra in single-crystal LiNbO3.
Collected 7Li nuclear magnetic resonance spectra in powder samples of LiNbO3–LiTaO3 solid solutions.
Calculated electric field gradients to deduce effective atomic charges.
Calculated net charges of +1.59 on niobium and −0.86 on oxygen from the electric field gradient at the lithium site.
Demonstrated that the niobate ion exhibits predominantly covalent bonding rather than an idealized ionic structure.

Cite This Study

Peterson et al. (1967) studied this question.

synapsesocial.com/papers/6a1d10f173c56dd1bd2f18fb https://doi.org/10.1063/1.1840478

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Implication

Spectroscopic analysis demonstrates covalent bonding in lithium niobate crystals, highlighting partial ionic charge distributions in ferroelectric materials.

NMR Study of Ferroelectric LiNbO3 and LiTaO3. I

Discussion

Member takes

Implication

Key Points

Cite This Study

NMR Study of Ferroelectric LiNbO3 and LiTaO3. I

Discussion

Member takes

Implication

Key Points

Cite This Study

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