| 摘要 |
PURPOSE:To form crystal having good heat release properties and easy application to a device by selectively forming an inorganic nonoxidative compd. good in insulating properties and heat conductivity on a nucleus nonformation face. CONSTITUTION:A nucleus nonformation face 1 which consists of an inorganic nonoxidative compd. (e.g. BN) having heat conductivity and insulating properties and is small in nucleus formation density is prepared. A nucleus formation face 3 having small area sufficient to grow crystal of only single nucleus and having nucleus formation density larger than the nucleus formation density of the face 1 is formed thereon. Then single crystal 4 consisting of the single nucleus is grown by performing crystal formation treatment to the faces 1, 3.
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