| abstract |
An inorganic reaction system comprising a lead-bismuth-tellurium-silicate composition of formula 1: Pb a -Bi b -Te c -Si g -M d -O e wherein 0 <a, b, d, 1, 0? D, e? 1, and the sum of a, b, c, d and g is 1, 0 <a? 0.05, 0.2 <b? 0.95, 0 <c? 0.5, 0 <d? b is from about 0.1: 99.9 to about 5:95, b: c is from about 50:50 to 99: 1, M is at least one element, and e is at least one element selected from the group consisting of Pb, Bi, Te, Si , And the M component are sufficient to balance. |