| 简介 |
PROBLEM TO BE SOLVED : To obtain an optical ceramic which is doped with an activating element, highly transparent, highly dense, and has a high effective atom number.
SOLUTION : A transparent polycrystal optical ceramic having a symmetric and cubic-structured single particle which has at least one optical activator center is constituted to satisfy the following formula : A2+xByDzE7, provided that -1.15≤x≤0, 0≤y≤3, and 0≤z≤1.6, and besides 3x+4y+5z=8, where A is at least one trivalent cation selected from the group consisting of rare earth ions. B is at least one quadrivalent cation, D is at least one quinquevalent cation, and E is at least one bivalent anion.
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