Garnet Polyhedron in the Isobaric–Isothermal Y2O3–Bi2O3–Fe2O3–Ga2O3 Tetrahedron

Аннотация

X-ray diffraction data have been used to construct the composition polyhedron of the (Y,Bi)₃(Fe,Ga)₅O₁₂ garnet phase (18 vertices and 11 faces) in the isobaric–isothermal Y₂O₃–Bi₂O₃–Fe₂O₃–Ga₂O₃ composition tetrahedron. We have identified nine crystalline phases involved in multiphase equilibria with the garnet phase, paying particular attention to equilibria involving the garnet and perovskite phases.