Research/Sitter/MAGNDATA / 0.367_EuCr2As2.mcif

EuCr₂As₂

MAGNDATA entry 0.367 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹4/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 21 K (−252 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4 m′ 2′ BNS 119.319
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 12.4 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 3.863 · b 3.863 · c 12.867 Å · α 90° · β 90° · γ 90°
Transition	21 K (−252 °C)
Measured at	2 K
Magnetic ions	Cr, Eu
Largest moment component	6.2 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′ 2′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1	Eu	0	0	0	0	0	6.2	6.2
Cr1_1	Cr	0	0.5	0.25	0	0	1.7	1.7
Cr1_2	Cr	0.5	0	0.25	0	0	−1.7	1.7
As1	As	0	0	0.368

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

S. Nandi et al. PHYSICAL REVIEW B (2016) · doi:10.1103/PhysRevB.94.094411

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.367_EuCr2As2.mcif from MAGNDATA · entry page

sha256 of this copy: 7d81aa9cf143c7dc46626fb0ca465b26daa3032cf1e6825bf8bdd8d39997980b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.367_EuCr2As2.mcif.