| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide optoceramics doped with activator elements and having high transmission, high density and high effective atomic numbers. <P>SOLUTION: The optical ceramics are represented by formula: A<SB>2+x</SB>B<SB>y</SB>D<SB>z</SB>E<SB>7</SB>. In the formula, x, y and z satisfy 0≤x≤1.1, 0≤y≤3, 0≤z≤1.6, respectively, and 3x+4y+5z=8; A represents at least one trivalent cation selected from a group of rare earth ions; B represents at least one tetravalent cation; D represents at least one pentavalent cation; and E represents at least one divalent anion. <P>COPYRIGHT: (C)2011,JPO&INPIT |
