Research/Sitter/MAGNDATA / 0.426_EuMnBi2.mcif

EuMnBi₂

MAGNDATA entry 0.426 · 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 ≤ 315 K (42 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4′/m′ m′ m BNS 139.536
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.5342 · b 4.5342 · c 22.427 Å · α 90° · β 90° · γ 90°
Transition	315 K (42 °C)
Measured at	25 K
Magnetic ions	Eu, Mn
Largest moment component	3.4 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 I 4′/m′ m′ m →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1	Eu	0	0.1148
Mn1	Mn	0.5	0.25	0	0	3.4	3.4
Bi1	Bi	0.5	0
Bi2	Bi	0	0.3287

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

H. Masuda et al. PHYSICAL REVIEW B (2020) · doi:10.1103/PhysRevB.101.174411

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.426_EuMnBi2.mcif from MAGNDATA · entry page

sha256 of this copy: d1e643f83e7d40b00ed9248883fcd888548888335a9269d77b046e741dcb17f2
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.426_EuMnBi2.mcif.