Subsolidus phase equilibria and the Li5Nd4FeO10 phase in the Li2O–Nd2O3–Fe2O3 system

A survey of the subsolidus phase equilibria in the system Li2O–Nd2O3–Fe2O3 was made at subsolidus temperatures in the range 1000–1050 °C. A ternary phase was identified. The phase is centered on Li5Nd4FeO10, with a cubic lattice a = 11.9494 Å. The compound melts incongruently at 1105 °C. The magnetic susceptibility was measured in the temperature range 4–300 K. The compound is paramagnetic in the temperature range 150–300 K and follows the Curie–Weiss law. At about TN = 10 K, a long-range magnetic ordering is observed.