| http://www.w3.org/ns/prov#value | - Conventional high pressure/high temperature (HP/HT) apparatuses are known in the art, for use in the preparation of crystals such as diamond, cubic boron nitride (CBN), hexagonal boron nitride (HBN), semiconductor crystals such as gallium nitride (GaN) crystals and the like, as disclosed in U.S. patent application Publication No. 2003/0140845.
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