Abstract

In this chapter, the concentration conditions of LiNbO3:Zn single crystals growth are searched in concentration range ~4.0–8.91 mol% ZnO. We have shown that the area of concentrations ~4–6.8 mol% ZnO is suitable for obtaining of optically and compositionally homogeneous LiNbO3:Zn single crystals with high resistance to optical damage. During this research the best characteristics were revealed for LiNbO3:Zn single crystals grown from melt containing 6.12 mol% ZnO. If more than 20 % of the melt contains more than 6.8 mol% ZnO crystallizes, highly defective LiNbO3:Zn crystals grow. They contain two crystal phases: Li6ZnNb4O14 and LiNbO3. The concentrations of ZnO in the melt that change conditions of LiNbO3:Zn crystals formation have been obtained from 5.4 up to 6.8 mol%.

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