Research/Sitter/MAGNDATA / 1.176_YbCo2Si2.mcif

YbCo₂Si₂

MAGNDATA entry 1.176 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 0.9 K (−272 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I_c b c a BNS 73.553
Point group	mmm1′
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/4 1/4 1] 1k
Cell	a 15.4132 · b 15.4132 · c 9.6777 Å · α 90° · β 90° · γ 90°
Transition	0.9 K (−272 °C)
Measured at	0.43 K
Magnetic ions	Yb
Largest moment component	1 μ_B
Method	NPD

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_c b c a →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Yb1	Yb	0	0	1	1	0	1.4142
Co1_1	Co	0.125	0.25
Co1_2	Co	0.375	0.25
Si1	Si	0	0.38

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

Mufti, N. et al. PHYSICAL REVIEW B (2016) · doi:10.1103/PhysRevB.94.045116

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.176_YbCo2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: b45d87b8839d2b131c7224d96efcfc0690496fdf27b91a908e7b1c6b27137c15
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.176_YbCo2Si2.mcif.