Abstract
It is shown that previous difficulties in LiGaO 2 growth under hydrothermal conditions have come about because of attempts to grow in retrograde solubility regions. Solubility studies are used to deduce appropriate conditions for growth. Growth rate was studied as a function of temperature difference between dissolving and growth zones and of percent fill of the hydrothermal autoclave at several temperatures and on seeds of several orientations. Growth rates as high as 90 mil/day were obtained and the best conditions of growth were found to be: 3.5 M (molal) NaOH, 70% fill, crystallization temperature 385 °C, Δ T (temperature difference between dissolving and growth zones) 35 °C and seed orientation {001}. Hydrothermal growth is an attractive method for the crystallization of LiGaO 2 and good quality material grows faster than any other hydrothermal material at moderate conditions.
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