Active optoceramics with cubic crystal structure, method of production of the optoceramics, and uses thereof
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United States of America Patent
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Jun 12, 2012
Grant Date -
Aug 5, 2010
app pub date -
Jan 29, 2010
filing date -
Feb 2, 2009
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Abstract
The transparent polycrystalline optoceramic has single grains with a symmetric cubic crystal structure and at least one optically active center. The optoceramic has the following formula: A2+xByDzE7, wherein 0≦x≦1.1, 0≦y≦3, 0≦z≦1.6, and 3x+4y+5z=8, and 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. The method of making the optoceramic includes preparing a powder mixture from starting materials, pre-sintering, sintering and then compressing to form the optoceramic. Scintillator media made from the optoceramic are also described.
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