SINGLE CRYSTAL AND ITS PRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a mass-producing method for a suitable oxide or fluoride single crystal being hardly changing composition and where yield at the production of a higher harmonic wave-generating element by a micro pulling-down method can be increased. SOLUTION: The raw material of the single crystal is melted in a crucible 7 with a nozzle 13 and a seed crystal is in contact with a melt 18. The single crystal is grown by pulling down the melt from a nozzle opening 13. The melt 18 is pulled down at the state that the center axis C of the seed crystal is apart from the center axis N of the nozzle opening or that the seed crystal is moved with a periodic motion to the nozzle opening. COPYRIGHT: (C)2005,JPO&NCIPI