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Presents a study which aimed to grow a heavily magnesium oxide doped in LiNbO[sub3] crystal. Method used in the study; Information on the Raman spectra of the magnesium-doped LiNbO[sub3] powders; Measurement of the Curie temperature and the melting point.

ZnO-doped lithium niobate crystals with a doped concentration of up to 8.3 mol % were grown by the Czochralski technique. The effects of incorporating Zn2+ ions into LiNbO3 crystals were studied by powder x-ray diffraction and taking polarization hysteresis loop measurements. When the Li-site vacancy model is adopted, the coercive fields obtained from the polarization reversal measurement depend strongly on the number of NbLi4-+4VLi-. However, the coercive field of Zn-doped ions into LiNbO3 is insensitive to the ZnLi2++VLi-. Experimental results indicate that four distinct substitutions of Zn-2 ions incorporated into ions into LiNbO3 crystals for doping concentrations from 0 to 8.3 mol %. The extent of Zn substitution is quantitatively determined for doping of below 7.5 mol %. [ABSTRACT FROM AUTHOR]