Abstract
We report the magnetic structure of monoclinic Mn3As2 at 3 K and 250 K using neutron powder diffraction measurements. From magnetometry data, the Curie temperature of Mn3As2 was confirmed to be around 270 K. Calorimetry analysis showed the presence of another transition at 225 K. At 270 K, Mn3As2 undergoes a k=0 ferrimagnetic ordering in the magnetic space group C2/m (#12.58) with Mn moments pointing along b. Below 225 K, there is a canting of Mn moments in the ac plane which produces a multi-k non-collinear magnetic structure in space group C2/c (#15.85). The components of Mn moments along b follow k=0 ordering and the components along a and c have [Formula presented] propagation vector. The change in the magnetic ground state with temperature provides a deeper insight into the factors that govern magnetic ordering in Mn–As compounds.
Original language | English (US) |
---|---|
Article number | 121901 |
Journal | Journal of Solid State Chemistry |
Volume | 294 |
DOIs | |
State | Published - Feb 2021 |
Keywords
- Geometric frustration
- Magnetic structure refinement
- Magnetocrystalline anisotropy
- Metallic ferrimagnet
- Neutron diffraction
- Non-collinear magnetic ordering
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry