Magnetism in the insulating BaFe 2Se 3 was examined through susceptibility, specific heat, resistivity, and neutron diffraction measurements. After formation of a short-range magnetic correlation, a long-range ordering was observed below T N∼255 K. The transition is obscured by bulk properties. Magnetic moments (a) are arranged to form a Fe 4 ferromagnetic unit, and each Fe 4 stacks antiferromagnetically. This block magnetism is of the third type among magnetic structures of ferrous materials. The magnetic ordering drives unusually large distortion via magnetoelastic coupling.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2012 Feb 22|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics