Research/Sitter/MAGNDATA / 1.723_NaMn2O4.mcif

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Spin lattice of Na1Mn2O4Spin lattice of Na1Mn2O4

Na1Mn2O4

MAGNDATA entry 1.723 · source
antiferromagnet
No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.
Spin group ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 35 K (−238 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupCa c BNS 9.41
Point groupm1′
Parent space groupP n a m No. 62
Spinscollinear · net moment 0 μB per cell
Propagation[1/2 1/2 1/2] 1k
Cella 17.722 · b 22.394 · c 5.682 Å · α 90° · β 90° · γ 90°
Transition35 K (−238 °C)
Measured at15 K
Magnetic ionsMn
Largest moment component2.6 μB
MethodNPD

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in Ca c →
Atom sites · 14 sites · CSV
siteelementxyzmambmc|m| (μB)
Mn1_1Mn0.21420.30440.3750−2.6−0.42.6306
Mn1_2Mn0.78580.69560.12502.60.42.6306
Mn2_1Mn0.20970.04780.375
Mn2_2Mn0.79030.95220.125
Na1_1Na0.12640.41760.375
Na1_2Na0.87360.58240.125
O1_1O0.10650.07390.375
O1_2O0.89350.92610.125
O2_1O0.05750.24010.375
O2_2O0.94250.75990.125
O3_1O0.01270.34710.375
O3_2O0.98720.65290.125
O4_1O0.21550.20670.375
O4_2O0.78440.79330.125

Moment components are along the crystal axes a, b, c (μB), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

N. Matsubara et al. PHYSICAL REVIEW RESEARCH (2020) · doi:10.1103/PhysRevResearch.2.043143

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.723_NaMn2O4.mcif from MAGNDATA · entry page

sha256 of this copy: 9ada9fdbe391c859422ad4ea65774fcd36318b3f2f91da4e8367056159775c08
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.723_NaMn2O4.mcif.