Research/Sitter/MAGNDATA / 1.777_EuAl2Si2.mcif

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Spin lattice of Eu1Al2Si2Spin lattice of Eu1Al2Si2

Eu1Al2Si2

MAGNDATA entry 1.777 · 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 ¹3̄¹m × 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 groupCc 2/m BNS 12.63
Point group2/m1′
Parent space groupP 3 m 1 No. 164
Spinscollinear · net moment 0 μB per cell
Propagation[0 0 1/2] 1k
Cella 4.162 · b 4.162 · c 14.416 Å · α 90° · β 90° · γ 120°
Transition35 K (−238 °C)
Measured at9 K
Magnetic ionsEu
Largest moment component5.8 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 Cc 2/m →
Atom sites · 3 sites · CSV
siteelementxyzmambmc|m| (μB)
Eu1Eu00005.805.8
Si1Si0.33330.66670.315
Al1Al0.33330.66670.134

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

P. Schobinger-Papamantellos et al. J. less-common met. (1989) · doi:10.1016/0022-5088(89)90390-1

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.777_EuAl2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: 63d3511cc5e3965cbd02d0a40cffc498476a322c49c332fae7ce80c23a29f440
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.777_EuAl2Si2.mcif.