Research/Sitter/MAGNDATA / 1.556_FeSn2.mcif

FeSn₂

MAGNDATA entry 1.556 · 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 ≤ 378 K (105 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_I b c n BNS 60.432
Parent space group	I 4/m c m No. 140
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 6.537 · b 6.537 · c 5.316 Å · α 90° · β 90° · γ 90°
Transition	378 K (105 °C)
Measured at	300 K
Magnetic ions	Fe
Largest moment component	1.15 μ_B
Method	NPD and Mossbauer spectrosc.

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 P_I b c n →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	0.25	1.15	0	0	1.15
Sn1	Sn	0.1611	0.6611	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

G Venturini et al. J. Phys. F: Met. Phys. (1985) · doi:10.1088/0305-4608/15/2/016

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.556_FeSn2.mcif from MAGNDATA · entry page

sha256 of this copy: 2dfbd94b338e8a8a27ae38f52d8626b2d6ded29f7417cd8fc32a004c13bcdb37
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.556_FeSn2.mcif.