Abstract
Single crystals of rutile (TiO2) were grown from several fluxes. The good results were obtained with Li2O-MoO3 flux systems. Using Li2O-m MoO3 fluxes, the habit and color of growing crystals vary with the amount of MoO3, which bring with it single crystals comparatively large in size. They vary continuously in form and color, from needle-like transparent crystal to prism-like and short-prism-like, black or opaque crystals.The growth experiments were carried out by slow-cooling method, temperature of growth being 1250°C to 800°C and cooling rate with 7°C/hr. The grown crystals obtained in such a method have needle-like habit 15 to 20mm in length elongated to c-axis and prism-like 1.5mm in diameter and 10mm in length, both being comparatively large in size and transparent free from inclusions.The solubility of rutile was measured from 1000° to 1300°C in Li2O-2MoO3 solvent, and also flux composition was varied from m=1 to m=3 at constant temperature 1150°C. The solubility was found to slightly increased dependent on MoO3 content. The dependence on temperature was found to almost linearly increased ranging from 1200° to 1300°C.
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