Research/Sitter/MAGNDATA / 1.630_LuMn6Sn6.mcif

LuMn₆Sn₆

MAGNDATA entry 1.630 · 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 ¹6/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 353 K (80 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_c m c m BNS 63.466
Point group	mmm1′
Parent space group	P 6/m m m No. 191
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 5.507 · b 5.507 · c 17.988 Å · α 90° · β 90° · γ 120°
Transition	353 K (80 °C)
Measured at	300 K
Magnetic ions	Mn
Largest moment component	1.33 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 m c m →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Lu1	Lu	0	0	0.25
Mn1_1	Mn	0.5	0	0.128	0	1.33	0	1.33
Mn1_2	Mn	0	0.5	0.128	0	1.33	0	1.33
Sn1	Sn	0.3333	0.6667	0
Sn2	Sn	0.3333	0.6667	0.25
Sn3	Sn	0	0	0.0832

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. Journal of Alloys and Compounds (1993) · doi:10.1016/0925-8388(93)90470-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.630_LuMn6Sn6.mcif from MAGNDATA · entry page

sha256 of this copy: 3b3b64929ae98fc6ffb5f950e099494beff3c4773126b7f0d2a947fa1960f928
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.630_LuMn6Sn6.mcif.