Seed crystal holder

A seed crystal holder used to grow a single crystal by a pulling method, comprising:

• a holder body including a seed crystal insertion bore having at least two inner surfaces and a hole through the holder body in communication with the seed crystal insertion bore, the seed crystal insertion bore receiving a seed crystal including a pressure reception surface and at least two outer surfaces;
• and
• a block for inserting through the hole and into the seed crystal insertion bore, the block including a pressing surface for pressing against the pressure reception surface of the seed crystal so as to press the at least two outer surfaces of the seed crystal simultaneously against the at least two inner surfaces of the seed crystal insertion bore so as fix the seed crystal within the seed crystal insertion bore and prevent the seed crystal from inclining.

A seed crystal holder used to grow a single crystal by a pulling method, comprising:

• a holder body including a rectangular shaped seed crystal insertion bore and at least one hole through the holder body in communication with the seed crystal insertion bore, the seed crystal insertion bore having at least two inner surfaces and receiving a seed crystal including at least two outer surfaces;
• and
• at least one block, the at least one block pressing against the seed crystal in at least two directions simultaneously so as to press the at least two outer surfaces of the seed crystal simultaneously against the at least two inner surfaces of the seed crystal insertion bore so as fix the seed crystal within the seed crystal insertion bore.