NITRIDE POLYCRYSTAL OF GROUP 13 METAL IN PERIODIC TABLE, AND PRODUCTION METHOD OF NITRIDE SINGLE CRYSTAL OF GROUP 13 METAL IN PERIODIC TABLE BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a production method of a nitride single crystal capable of heightening raw material utilization efficiency by improving a growth rate, and producing efficiently a nitride crystal having excellent conductivity without contamination of an unnecessary impurities, in production of the nitride single crystal by an ammonothermal method.SOLUTION: A nitride polycrystal of a group 13 metal in the periodic table in which the average pore diameter in a pore volume standard is 8 μm or more and 50 μm or less, and further the pore volume is 0.1×10ml/g or more and 0.1 ml/g or less is filled into a reaction vessel as a raw material, and a nitride single crystal of the group 13 metal in the periodic table is grown in the presence of a solvent in the supercritical and/or subcritical state in the reaction vessel.