Growth of crack-free 3-inch diameter lithium tetraborate single crystals by Czochralski method

The mode of occurrence and the origin of cracking of 3-inch diameter Li/sub 2/B/sub 4/O/sub 7/ single crystal during growth have been investigated. From these considerations, growth conditions for crack-free single crystal have been examined and crack-free 3-inch diameter lithium tetraborate (Li/sub 2/B/sub 4/O/sub 7/) single crystals by Czochralski method have been successfully grown.<
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