Two Magnetic Orderings and a Spin-Flop Transition in Mixed Valence Compound Mn3O(SeO3)3

A mixed-valence manganese selenite, Mn3O(SeO3)(3), was successfully synthesized using a conventional hydrothermal method. The three-dimensional framework of this compound is composed of an MnO6 octahedra and an SeO3 trigonal pyramid. The magnetic topological arrangement of manganese ions shows a three-dimensional framework formed by the intersection of octa-kagome spin sublattices and staircase-kagome spin sublattices. Susceptibility, magnetization and heat capacity measurements confirm that Mn3O(SeO3)(3) exhibits two successive long-range antiferromagnetic orderings with T-N1 similar to 4.5 K and T-N2 similar to 45 K and a field-induced spin-flop transition at a critical field of 4.5 T at low temperature.

Automated summary

A mixed-valence manganese selenite with a three-dimensional framework structure has been successfully synthesized. The compound exhibits two consecutive long-range antiferromagnetic orderings and a field-induced spin-flop transition at low temperature.