Research/Sitter/MAGNDATA / 1.559_MnSn2.mcif

MnSn₂

MAGNDATA entry 1.559 · 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 ≤ 74 K (−199 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c c c m BNS 66.498
Parent space group	I 4/m c m No. 140
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/4 1/4 0] 1k
Cell	a 26.5752 · b 26.5752 · c 5.4206 Å · α 90° · β 90° · γ 90°
Transition	74 K (−199 °C)
Measured at	4.2 K
Magnetic ions	Mn
Largest moment component	1.65 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 c c m →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0.25	1.65	1.65	0	2.3335
Sn1_1	Sn	0.0404	0.1654	0
Sn1_2	Sn	0.0846	0.0404	0
Sn1_3	Sn	0.0404	0.4154	0
Sn1_4	Sn	0.0846	0.2904	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

L. M. Corliss et al. J. Appl. Phys. (1968) · doi:10.1063/1.2163480

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.559_MnSn2.mcif from MAGNDATA · entry page

sha256 of this copy: 44484c1014519d3cf0b30a0763895c8fa90306c03799c9cebbdf79b14a702e85
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.559_MnSn2.mcif.