Research/Sitter/MAGNDATA / 1.623_EuMg2Bi2.mcif

EuMg₂Bi₂

MAGNDATA entry 1.623 · 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 ≤ 6.7 K (−266 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_c 2/m BNS 12.63
Point group	2/m1′
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 4.764 · b 4.764 · c 15.71 Å · α 90° · β 90° · γ 120°
Transition	6.72 K (−266 °C)
Measured at	4 K
Magnetic ions	Eu
Largest moment component	6.61 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_c 2/m →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Bi1	Bi	0.3333	0.6667	0.125
Eu1	Eu	0	0	0	6.61	0	0	6.61
Mg1	Mg	0.3333	0.6667	0.3137

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. Marshall et al. J. Appl. Phys. (2021) · doi:10.1063/5.0035703

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.623_EuMg2Bi2.mcif from MAGNDATA · entry page

sha256 of this copy: 67286399c6068f85a35164ce310c4b4390eb530f3802b6c623f72b9fdc08ef1c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.623_EuMg2Bi2.mcif.