FORSTERITE SINGLE CRYSTAL AND METHOD FOR THE MANUFACTURE OF THE SAME

摘要

In a method for manufacturing forsterite single crystals containing tetravalent chromium as luminescent ions, the method which comprises the use of chromium dioxide or comprises the use of a sintered body obtained either by sintering in a non-reducing atmosphere chromium trioxide or a mixture of at least 30 wt.% of chromium trioxide with up to 70 wt.% of dichromium trioxide, together with other oxide materials for forsterite, or by firing in an oxidizing atmosphere a mixture of more than 70 wt.% of dichromium trioxide with less than 30 wt.% of chromium trioxide, together with other oxide materials for forsterite. This invention also relates to forsterite single crystals obtained by each of the above methods.