R. Komatsu et al., GROWTH OF CRACK-FREE 3-INCH-DIAMETER LITHIUM TETRABORATE SINGLE-CRYSTALS BY CZOCHRALSKI METHOD, JPN J A P 1, 33(9B), 1994, pp. 5533-5535
The growth of crack-free 3-inch-diameter lithium tetraborate (Li2B4O7)
Single crystals by the Czochralski method has been studied. The relat
ionships between crystal cracking rate during growth and the crystal r
otation rate and the position of the work-coil have been examined. It
is concluded that crystal cracking at a later stage of growth is relat
ed to the temperature fluctuation in melt.