Research/Sitter/MAGNDATA / 1.483_Eu0.5Ca0.5Fe2As2.mcif

Eu_0.5Ca_0.5Fe₂As₂

MAGNDATA entry 1.483 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

Structure · 9 properties

Magnetic group	C_A m c a BNS 64.480
Parent space group	F m m m No. 69
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1 0] 1k
Cell	a 5.524 · b 5.521 · c 11.94 Å · α 90° · β 90° · γ 90°
Measured at	11 K
Magnetic ions	Eu, Fe
Largest moment component	1.1 μ_B
Method	Polarized and unpolarized 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_A m c a →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1	Eu	0	0	0
Ca1	Ca	0	0	0
Fe1	Fe	0.75	0.25	0.25	1.1	0	0	1.1
As1	As	0	0	0.3646

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

W.T. Jin et al. PHYSICAL REVIEW B (2019) · doi:10.1103/PhysRevB.99.140402

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.483_Eu0.5Ca0.5Fe2As2.mcif from MAGNDATA · entry page

sha256 of this copy: bf2a0a11e2b1992a49f14dcd0b61636f1db42be92a3170ab9cca1efac29dadc0
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.483_Eu0.5Ca0.5Fe2As2.mcif.