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Published online by Cambridge University Press: 21 February 2011
Compositions from the systems Pb-Mn-B-O and Pb-Mn-Te-0 are used tosynthesize glass-ceramics obtained by solid state reactions and fromsupercooled melts. By casting on a metal plate or by quenching with the aidof twin rollers the melts are cooling. The glass-crystalline materials areobtained after heating glasses from the combination of PbO-MnO-B203 and PbO-MnO-TeO2 with theaddition of La203 from 10 to 50 wt.% and the formationof the crystalline phases is determined.