Patent ID: 8541330
Filing Date: 2013-09-24
Classification: B82Y,C04B

Abstract:
1. A method of producing an optoceramic material, said method comprising the step of manufacturing a molded body from a powder mixture of starting materials, wherein said starting materials include at least one sintering aid selected from the group consisting of SiO 2 , TiO 2 , ZrO 2 , HfO 2 , Al 2 O 3 and fluorides; wherein the optoceramic material produced by said method comprises at least 99% by weight of single crystals with a cubic crystal structure analogous to that of pyrochlore or fluorite and with a stoichiometry of A wherein A is at least one trivalent rare earth cation, B is at least one tetravalent cation, D is at least one pentavalent cation and E is at least one divalent anion; wherein the optoceramic material produced by the method has an average grain size in a range from 5 to 300 μm and is very densely sintered; and wherein a sample of the optoceramic material that has a thickness of 5 mm has an internal transmittance that is at least 50% at a wavelength of 400 nm and at least 60% at a wavelength of 600 nm.