SINGLE CRYSTAL PULLING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a single crystal pulling apparatus capable of producing a high quality single crystal and also enable to ensure the easiness of access by lessening the intensity of the magnetic field (magnetic flux density) in a single crystal growth region. SOLUTION: When a single crystal pulling apparatus is transverse field-type equipment having a crucible 2 and two electromagnets (coils) 1 and 1 installed in both right and left sides of the crucible 2 or both sides before and behind the crucible 2 so that the electromagnets have horizontal position, the two electromagnets (coils) 1 and 1 is excited so that the direction of the induced magnetic field is mutually opposed and forms the cusped magnetic field 4.