Research/Sitter/MAGNDATA / 1.63_MnPb4Sb6S14.mcif

MnPb₄Sb₆S₁₄

MAGNDATA entry 1.63 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 6 K (−267 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_a 2₁/c BNS 14.80
Point group	2/m1′
Parent space group	P 2₁/c No. 14
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 0] 1k
Cell	a 8.0432 · b 19.178 · c 15.837 Å · α 90° · β 91.89° · γ 90°
Transition	6 K (−267 °C)
Measured at	1.6 K
Magnetic ions	Mn
Largest moment component	3.2 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 P_a 2₁/c →

Atom sites · 13 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Pb1	Pb	0.2177	0.2395	0.5733
Pb2	Pb	0.2301	0.1407	0.8139
Sb1	Sb	0.4408	0.0484	0.6033
Sb2	Sb	0.4548	0.9367	0.8187
Sb3	Sb	0.438	0.1592	0.3695
Mn1	Mn	0.25	0	0	0	3.2	0	3.2
S1	S	0.2245	0.1014	0.4964
S2	S	0.4715	0.1596	0.6817
S3	S	0.487	0.0453	0.9006
S4	S	0.46	0.2695	0.4499
S5	S	0.234	0.0031	0.714
S6	S	0.206	0.2966	0.775
S7	S	0.256	0.3928	0.5836

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

P. Leone et al. Phys Chem Minerals (2008) · doi:10.1007/s00269-007-0213-3

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.63_MnPb4Sb6S14.mcif from MAGNDATA · entry page

sha256 of this copy: eaae90f00e94cf1f3d38337317ec3e88be1b3e6fbc66bd1dac7e19b112168ef5
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.63_MnPb4Sb6S14.mcif.