The defect structure of congruently melting lithium niobate
- 1 September 1993
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 74 (5) , 3080-3083
- https://doi.org/10.1063/1.354572
Abstract
Six samples of congruently melting lithium niobate (∼Li0.95Nb1.01O3) have been examined by powder x‐ray diffraction for the occurrence of niobium antisite defects (niobium on lithium sites). Contrary to current thinking, we have found no evidence for the occurrence of high concentrations of such defects, which also require the presence of Nb site vacancies. Rather, it was found that the number of antisite defects is close to the minimum that is required to sustain charge neutrality in a model of the type ([Li1−xNbx/5][Nb]O3), where the Nb site is fully occupied.This publication has 13 references indexed in Scilit:
- Structural Transitions in LiNbO3 and NaNbO3Journal of Solid State Chemistry, 1993
- Comparative study of defect structures in lithium niobate with different compositionsJournal of Solid State Chemistry, 1992
- Compositional uniformity in growth and poling of large-diameter lithium niobate crystalsJournal of Crystal Growth, 1991
- Defects in LiNbO3—I. experimental aspectsJournal of Physics and Chemistry of Solids, 1991
- Defect structure dependence on composition in lithium niobateActa crystallographica Section B, Structural science, crystal engineering and materials, 1986
- LiNbO3 with ilmenite-type structure prepared via ion-exchange reactionJournal of Solid State Chemistry, 1985
- Titanium diffusion into LiNbO3 as a function of stoichiometryJournal of Applied Physics, 1984
- 93Nb NMR Linewidths in Nonstoichiometric Lithium NiobateThe Journal of Chemical Physics, 1972
- A profile refinement method for nuclear and magnetic structuresJournal of Applied Crystallography, 1969
- Stoechiométrie des monocristaux de métaniobate de lithiumJournal of Crystal Growth, 1968