Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition

Phenomenological theory of a single domain wall in uniaxial trigonal ferroelectrics: Lithium niobate and lithium tantalate

A phenomenological treatment of domain walls based on the Ginzburg-Landau-Devonshire theory is developed for uniaxial trigonal ferroelectrics, lithium niobate and lithium tantalate. The contributions to the domainwall energy from polarization and strain as a function of orientation are considered. Analytical expressions are developed that are analyzed numerically to determine the minimum polari...

1 Growth and Properties of Ru Doped Lithium Niobate Crystal

Ruthenium (Ru) doped lithium niobate (LiNbO3) single crystal was grown by the Czochralski method from a congruent melt composition. The color of the Ru: LiNbO3 was red and darkened with the increasing Ru concentration. The amount of Ru concentrated in the grown crystal gradually decreased along the pulling direction because the effective segregation coefficient of Ru in lithium niobate is great...

Coercive fields in ferroelectrics: A case study in lithium niobate and lithium tantalate'

Ultrafast zone-center coherent lattice dynamics in ferroelectric lithium tantalate.

Femtosecond time-resolved pump-probe experiments were carried out to study ultrafast lattice dynamics of ferroelectric lithium tantalate. Both the fully symmetric (A1 mode) and doubly degenerate (E mode) coherent phonons at the center of the Brillouin zone were excited via impulsive stimulated Raman scattering, as confirmed by the excitation intensity dependence.

Natural focusing of x rays from ferroelectric lithium niobate wafers