Research/Sitter/MAGNDATA / 1.841_Sr3Fe2O5Cl2.mcif

Sr₃Fe₂O₅Cl₂

MAGNDATA entry 1.841 · 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.

ordered ≤ 545 K (272 °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	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 7.90411 · b 7.90411 · c 23.8257 Å · α 90° · β 90° · γ 90°
Transition	545 K (272 °C)
Measured at	300 K
Magnetic ions	Fe
Largest moment component	3.05 μ_B
Method	NPD

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 · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	0.0784	3.05	0.46	0	3.0845
Sr1	Sr	0	0	0.5
Sr2	Sr	0	0	0.3429
Cl1	Cl	0	0	0.2048
O1_1	O	0	0.25	0.0896
O1_2	O	0.25	0	0.0896
O2	O	0	0	0

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

Andrew F. May et al. PHYSICAL REVIEW MATERIALS (2025) · doi:10.1103/PhysRevMaterials.9.034002

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.841_Sr3Fe2O5Cl2.mcif from MAGNDATA · entry page

sha256 of this copy: 65b8e7a27e665ccd0e260fb3e3068d6ad9f1ecb87f9222a870b90368cc8aaa7e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.841_Sr3Fe2O5Cl2.mcif.