Research/Sitter/MAGNDATA / 1.458_CsCo2Se2.mcif

CsCo₂Se₂

MAGNDATA entry 1.458 · 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 ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 78 K (−195 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_A m c m BNS 63.468
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 1 1] 1k
Cell	a 3.914 · b 3.914 · c 14.85 Å · α 90° · β 90° · γ 90°
Transition	78 K (−195 °C)
Measured at	10 K
Magnetic ions	Co
Largest moment component	0.546 μ_B
Method	NSD

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 C_A m c m →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Cs1	Cs	0	0
Co1	Co	0.5	0.25	0.546	0.546	0	0.7722
Se1	Se	0	0.35

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

Source

J. Liu et al. Chin. Phys. B (2018) · doi:10.1088/1674-1056/27/11/117401

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.458_CsCo2Se2.mcif from MAGNDATA · entry page

sha256 of this copy: d7b94c3173f6276f91d7952ee4dc61ace0c7090d53e4a508468be5886c167aaa
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.458_CsCo2Se2.mcif.