Research/Sitter/MAGNDATA / 0.897_TbMn2Ge2.mcif

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Spin lattice of Tb1Mn2Ge2Spin lattice of Tb1Mn2Ge2

Tb1Mn2Ge2

MAGNDATA entry 0.897 · source
s-wave ferrimagnet
Opposite moments of different size leave a net magnetisation.
Spin group ¹4/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 105 K (−168 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupI 4/m m′ m′ BNS 139.537
Point group4/mm′m′
Parent space groupI 4/m m m No. 139
Spinscollinear · net moment 8.8 μB per cell
Propagation[0 0 0] 1k
Cella 3.986 · b 3.986 · c 10.821 Å · α 90° · β 90° · γ 90°
Transition105 K (−168 °C)
Measured at2 K
Magnetic ionsMn, Tb
Largest moment component8.8 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 I 4/m m′ m′ →
Atom sites · 3 sites · CSV
siteelementxyzmambmc|m| (μB)
Tb1Tb00000−8.88.8
Mn1Mn00.50.25002.22.2
Ge1Ge000.383

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

G. Venturini et al. Journal of Alloys and Compounds (1996) · doi:10.1016/0925-8388(96)02272-4

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.897_TbMn2Ge2.mcif from MAGNDATA · entry page

sha256 of this copy: 309763c9fad4d111a0f33a3d210fe0be816124c5fc017ba742704416c5b749e3
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.897_TbMn2Ge2.mcif.