Research/Sitter/MAGNDATA / 1.471_EuCd2As2.mcif

EuCd₂As₂

MAGNDATA entry 1.471 · 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 ≤ 9.5 K (−264 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c 2/m BNS 12.63
Parent space group	P 3 m 1 No. 164
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 4.4499 · b 4.4499 · c 14.7 Å · α 90° · β 90° · γ 120°
Transition	9.5 K (−264 °C)
Measured at	2.6 K
Magnetic ions	Eu
Largest moment component	1 μ_B
Method	Resonant X-ray scattering

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_c 2/m →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1	Eu	0	0	0	1	0	0	1
Cd1	Cd	0.3333	0.6667	0.3166
As1	As	0.3333	0.6667	0.1233

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

M. C. Rahn et al. PHYSICAL REVIEW B (2018) · doi:10.1103/PhysRevB.97.214422

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.471_EuCd2As2.mcif from MAGNDATA · entry page

sha256 of this copy: 7c6bcbac46095d9a6eb7b2608d9e642480a82780674da856ba4d8ec9326d32f6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.471_EuCd2As2.mcif.