Phase formation in the BaCO3–PbO–Fe2O3–Nb2O5 system

Аннотация

Features of the formation of lead-ferroniobate compounds in the xBaCO₃–(1 – x)PbO–Fe₂O₃–Nb₂O₅ system by solid-phase synthesis are investigated. For perovskite-type lead-ferroniobate solid solution, a single-phase concentration region is revealed at 1233 K. The crystalline structures of the synthesized compounds are refined using Rietveld analysis and the Pm3̅m and R3m space groups. Ceramic samples of lead ferroniobate are studied by scanning electron microscopy.