Appeal No. 2002-1205 Application No. 09/422,380 7. The material of claim 2, further comprising: (a) a dopant of 5 mol% or less and selected from the group consisting of Mn, Dy, Bi, Y, Ho, Ce, Gd, Ga, Cd, Fe, and mixtures thereof. 7Page: Previous 1 2 3 4 5 6 7 8 NextLast modified: November 3, 2007