Research/Sitter/MAGNDATA / 1.734_Cu2FeGeS4.mcif

⬇ Download .mcif  ·  Data (JSON)

Spin lattice of Cu2Fe1Ge1S4Spin lattice of Cu2Fe1Ge1S4

Cu2Fe1Ge1S4

MAGNDATA entry 1.734 · 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.
Structure · 10 properties
Magnetic groupPS 1 BNS 1.3
Point group11′
Parent space groupI 4 2 m No. 121
Spinscollinear · net moment 0 μB per cell
Propagation[-1/2 0 1/2] 1k
Cella 10.65 · b 5.325 · c 21.02 Å · α 90° · β 90° · γ 90°
Measured at4.2 K
Magnetic ionsFe
Largest moment component3.1 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 PS 1 →
Atom sites · 8 sites · CSV
siteelementxyzmambmc|m| (μB)
Fe1Fe0003.11.703.5355
Ge1Ge000.25
Cu1_1Cu00.50.125
Cu1_2Cu00.50.375
S1_1S0.12950.2590.4377
S1_2S0.87050.7410.4377
S1_3S0.12950.7410.5623
S1_4S0.87050.2590.5623

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

M. Wintenberger et al. Mat. Res. Bull. (1979) · doi:10.1016/0025-5408(79)90214-9

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.734_Cu2FeGeS4.mcif from MAGNDATA · entry page

sha256 of this copy: 3ce9f330b8912d34fcd6a947966f921f95403ea53249a20309c47e8fe10732e9
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.734_Cu2FeGeS4.mcif.