Method for producing hexagonal boron nitride single crystals
AssigneeNational Institute for Materials Science
InventorsKenji Watanabe, Takashi Taniguchi, Satoshi Koizumi, Hisao Kanda, Masayuki Katagiri, Takatoshi Yamada, Nesladek Milos
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Abstract
A method for producing hexagonal boron nitride single crystals including mixing boron nitride crystals with a solvent thereby obtaining a mixture, heating and melting the mixture under high-temperature and high-pressure thereby obtaining a melted mixture, and recrystallizing the melted mixture thereby producing hexagonal boron nitride single crystals, wherein the solvent is boronitride of alkaline earth metal, or boronitride of alkali metal and the boronitride of alkaline earth metal.
Claims6
A method for producing hexagonal boron nitride single crystals, comprising:
- mixing boron nitride crystals with a solvent thereby obtaining a mixture;
- heating and melting the mixture under at least 1,500° C. and 20,000-60,000 atmospheric pressure thereby obtaining a melted mixture;
- and
- recrystallizing the melted mixture thereby producing hexagonal boron nitride single crystals,
- wherein the solvent is
- barium boronitride, or boronitride of alkali metal and the barium boronitride.
Dependencies are inferred from the claim text.