Patent ID: 8986447
Filing Date: 2015-03-24
Classification: B01J,B30B,C30B,Y02P,Y10T

Abstract:
1. An apparatus for crystal growth comprising: a cylindrical capsule region for containing a cylindrical capsule within which a crystal is to be grown under elevated pressure and temperature, the cylindrical capsule region having a length and ends; an annular heating member enclosing the length of the cylindrical capsule region for heating the contents of the cylindrical capsule to an elevated temperature to create an elevated pressure within the capsule; at least one annular ceramic member disposed around the annular heating member, wherein the at least one annular ceramic member comprises one or more of a rare earth metal oxide, zirconium oxide, hafnium oxide, magnesium oxide, calcium oxide, aluminum oxide, yttrium oxide, sialon (Si—Al—O—N), silicon nitride, silicon oxynitride, garnets, cristobalite, and mullite; and an enclosure disposed around all of the at least one annular ceramic members.