Patent ID: 9187845
Filing Date: 2015-11-17
Classification: C30B

Abstract:
1. A process for the preparation of a bulk or thin-film single-crystal formed of a matrix of a cubic sesquioxide of scandium, yttrium and/or rare earth metal doped with at least one element of the series of the lanthanides, said single-crystal corresponding to the following formula (I): in which: R R wherein said process is carried out in a chemically inert crucible and in that it comprises the following stages consisting in: 1) preparing a pulverulent mixture (PM1) comprising at least: 2) bringing the pulverulent mixture PM1 obtained above in stage 1) to a temperature T 3) maintaining the temperature of the liquid solution at the temperature T 4) the controlled cooling of the liquid solution from the temperature T 5) the withdrawal of the solid support from the liquid solution and then the controlled cooling of the sesquioxide of formula (I) crystallized on the solid support from the temperature T