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Spin lattice of Tm1Mn2Ge2Spin lattice of Tm1Mn2Ge2

Tm1Mn2Ge2

MAGNDATA entry 2.94 · source
noncollinear antiferromagnet
All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).
ordered ≤ 8.5 K (−265 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupP m′ c′ 21 BNS 26.70
Point groupm′m′2
Parent space groupI 4/m m m No. 139
Spinscoplanar · net moment 0 μB per cell
Propagation[1 1 1] · [0 0 1/2] 2k
Cella 3.933 · b 3.933 · c 21.55 Å · α 90° · β 90° · γ 90°
Transition8.5 K (−265 °C)
Measured at2 K
Magnetic ionsMn, Tm
Largest moment component6.63 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 P m′ c′ 21 →
Atom sites · 10 sites · CSV
siteelementxyzmambmc|m| (μB)
Tm1_1Tm0006.63006.63
Tm1_2Tm0.50.50.256.63006.63
Mn1_1Mn00.50.125−0.8202.132.2824
Mn1_2Mn0.500.125−0.8202.132.2824
Mn1_3Mn0.500.3750.820−2.132.2824
Mn1_4Mn00.50.3750.820−2.132.2824
Ge1_1Ge000.193
Ge1_2Ge000.807
Ge1_3Ge0.50.50.443
Ge1_4Ge0.50.50.057

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

⬇ 2.94_TmMn2Ge2.mcif from MAGNDATA · entry page

sha256 of this copy: cbfa01d00c2c883c4fee98dfc392e9a44ad941e4312b6d09df91764d5ee630f8
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.94_TmMn2Ge2.mcif.