SEED CRYSTAL AND METHOD FOR PREPARING SINGLE CRYSTAL

摘要

There is provided a seed crystal having a strength that the seed crystal is not broken even when the heavy single crystal is produced. The seed crystal is a seed crystal used for producing a single crystal according to Czochralski method wherein a relation between a sectional area of the seed crystal S (mm<2>) and a weight W (kg) of the single crystal to be pulled is represented by the formula: S>W. The single crystal is produced using the seed crystal. Furthermore, the single crystal is pulled with conforming a sectional area S (mm<2>) of a seed crystal and a weight W (kg) of a single crystal to be pulled to the formula: S>W.