Research/Sitter/MAGNDATA / 1.515_ErCo2Si2.mcif

ErCo₂Si₂

MAGNDATA entry 1.515 · 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 ≤ 6 K (−267 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_A 2₁/c BNS 14.83
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 3.8599 · b 3.8599 · c 9.7097 Å · α 90° · β 90° · γ 90°
Transition	6 K (−267 °C)
Measured at	4.2 K
Magnetic ions	Er
Largest moment component	5.61 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 P_A 2₁/c →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0	0	5.61	0	3.75	6.7479
Co1	Co	0.5	0.25
Si1	Si	0	0.3757

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.K. Yakinthos et al. Journal of Magnetism and Magnetic Materials (1983) · doi:10.1016/0304-8853(83)90075-6

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.515_ErCo2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: e888d4fd9c6473c94e95814ed07ff14619726cf57e938808ee03fe84f459a4b9
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.515_ErCo2Si2.mcif.