| abstract |
The present invention relates to an inorganic reaction system comprising a lead-bismuth-zinc composition of the formula (I): Pb a -Te b -Zn f -M d -O e , wherein 0 < a, b, d or f 1, the sum of a, b, d and f is 1,0 d 0.5,0<f 0.2, a:b is between about 10:90 and about 90:10, (a+f+d):b is between about 10:90 and about 90:10, M is one or more elements, and e is It is sufficient to balance the values of the Ph, Te, Zn and M components. |