Hydrothermal synthesis of hexagonal YMnO₃ and YbMnO₃ below 250 °C

Abstract

The hydrothermal synthesis of hexagonal YMnO3 and YbMnO3 are reported using high KOH mineraliser concentrations (>10 M) and low temperatures (< 240 °C). The relation between reaction parameters and resulting...

Low-Temperature Synthesis of Magnetic Pyrochlores (R2Mn2O7, R = Y, Ho–Lu) at Ambient Pressure and Potential for High-Entropy Oxide Synthesis

“…13 If either the A or B atom is magnetic, then there is a very high degree of frustration when the nearest-neighbor interactions are antiferromagnetic. 14 The perovskite manganese oxides (R 3+ Mn 3+ O 3 ) are relatively easily prepared under ambient oxygen, and phasepure materials can be obtained by soft chemical approaches such as sol−gel 15 or hydrothermal 16 methods rather than through conventional solid-state reactions. By contrast, the synthesis of the Mn-based pyrochlores is considered as a significant challenge.…”