Research/Sitter/MAGNDATA / 0.709_MnNb4S8.mcif

MnNb₄S₈

MAGNDATA entry 0.709 · source

s-wave ferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

Spin group ¹6/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

Structure · 9 properties

Magnetic group	C m c′ m′ BNS 63.463
Parent space group	P 6₃/m m c No. 194
Spins	collinear · net moment 6.8 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 6.66 · b 6.66 · c 12.44 Å · α 90° · β 90° · γ 120°
Measured at	4.2 K
Magnetic ions	Mn
Largest moment component	3.4 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 m c′ m′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Nb1	Nb	0	0	0.25
Nb2_1	Nb	0.4942	0.9884	0.25
Nb2_2	Nb	0.0116	0.5058	0.25
Mn1	Mn	0	0	0	0	3.4	0	3.4
S1	S	0.3333	0.6667	0.1154
S2_1	S	0.8361	0.6722	0.3713
S2_2	S	0.3278	0.1639	0.3713

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

B. Van Laar et al. JOURNAL OF SOLID STATE CHEMISTRY (1971) · doi:10.1016/0022-4596(71)90019-3

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.709_MnNb4S8.mcif from MAGNDATA · entry page

sha256 of this copy: 033d1b0f1e196f4c23996a82953c138e4cbdaf4c59360a421b7f114bdcd96385
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.709_MnNb4S8.mcif.