Patent ID: 8133319

Claim:
A process for producing a Group 13 metal nitride crystal, comprising reacting a liquid phase (A) containing a metal element of Group 13 of the Periodic Table with any one phase (B) of liquid phase (b1), solid phase (b2) and liquid phase (b3) wherein the liquid phase (b1) comprises a molten salt having dissolved therein a nitride containing a metal element except for Group 13 of the Periodic Table, the solid phase (b2) and the liquid phase (b3) comprise a composite nitride containing a metal element of Group 13 of the Periodic Table and a metal element except for Group 13 of the Periodic Table to grow a Periodic Table Group 13 metal nitride crystal, and the reaction is allowed to proceed while removing a by-product containing a metal element except for metals of Group 13 of the Periodic Table, which is produced by the reaction, from the reaction field.