Ba 4 NbMn 3 O 12 is reported, synthesized by a solid state method in air. The crystal structure, determined by performing refinements on room temperature powder x-ray diffraction data by the Rietveld method, consists of Mn 3 O 12 trimers in the configuration of three face-sharing MnO 6 octahedra, with the trimers arranged in triangular planes. An effective moment of 4.82 μ B /f.u is observed and competing antiferromagnetic and ferromagnetic interactions between Mn ions are inferred from the Weiss temperature of -4 K and the ferrimagnetic ordering transition of approximately 42 K. Ba 4 NbMn 3 O 12 is a semiconductor with a transport activation energy of 0.37 eV.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Polymers and Plastics
- Metals and Alloys
- manganese trimer
- triangular lattice