SINGLE CRYSTAL PULLING DEVICE AND LOW HEAT CONDUCTIVE MEMBER TO BE USED IN SINGLE CRYSTAL PULLING DEVICE

摘要

Provided is a single metal crystal pulling device which can prevent a heat loss from a crucible rotation axis to the outside of a furnace and can be produced at a lower cost. The single crystal pulling device (1) comprises: a quartz crucible (2) for storing therein silicon melt (3); a graphite crucible (4) for supporting the quartz crucible (2); a receiver (5) for fixing and supporting the graphite crucible (4) at the lower part thereof; and a crucible rotation axis (6) for supporting the receiver (5) at the lower part thereof and rotating and moving up and down the receiver (5) and the crucibles (2,4). A low heat conductive member (10) is interposed between the bonding surfaces of the receiver (5) and the crucible rotation axis (6). The low heat conductive member (10), which has a roughly tubular shape, is provided in such a manner that a convex portion of the crucible rotation axis (6) is inserted into a hole at the center of the low heat conductive member (10). Thus, a space (11) is formed below the bottom of the receiver (5).