Abstract
Lithium niobate and lithium tantalate are among the most important and most widely used materials in acousto-optics and acoustoelectronics. These materials have high values of piezoelectric constants, which makes it possible to use these materials as actuators; however, their use is limited by the thermal instability of a lithium niobate crystal and the low Curie temperature (TC) of a lithium tantalate crystal. LiNb(1-x)TaxO3 crystals have to overcome the aforementioned limitations of individual compounds.Crystals LiNb0.5Ta0.5O3 were grown by the Czochralski method, of good quality. Comparative studies of the features of high-temperature single domainization of LiNb0.5Ta0.5O3 crystals have been carried out. The main differences in the technological regimes for single-domainization of congruent LiNb0.5Ta0.5O3 crystals from congruent LiNbO3 crystals are demonstrated. The parameters of high-temperature electrodiffusion processing LiNb0.5Ta0.5O3 crystals are presented, which make it possible to obtain single-domain crystals for further study of their physical properties.
Highlights
Lithium niobate and lithium tantalate are among the most important and most widely used materials in acoustooptics and acoustoelectronics.
These materials have high values of piezoelectric constants, which makes it possible to use these materials as actuators; their use is limited by the thermal instability of a lithium niobate crystal and the low
Curie temperature (TC) of a lithium tantalate crystal.
Summary
Lithium niobate and lithium tantalate are among the most important and most widely used materials in acoustooptics and acoustoelectronics.
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