Patent ID: 8263509
Filing Date: 2012-09-11
Classification: C03C,H01G

Abstract:
1. A glass-ceramic comprising, as main crystalline phase, a perovskite phase of the following formula: Ba 1-x Z 1 x Ti 1-y Z 2 y O 3 , in which Z 1 is an element selected from the group consisting of Sr, Ca, Ce, Pb, La and Sm, in which Z 2 is an element selected from the group consisting of Zr, Hf, Nb, V, Y, Sc and Ta, and in which x and y are each independently of one another 0<x,y<0.5, whereby the size of crystallites is in the range of 10 nm to 50 μm, said glass ceramic further comprising 0.01 to 3 mol % of an oxide selected from the group consisting of Sb 2 O 3 , As 2 O 3 and Bi 2 O 3 .