Research/Sitter/MAGNDATA / 1.197_Fe4Si2Sn7O16.mcif

Fe₄Si₂Sn₇O₁₆

MAGNDATA entry 1.197 · source

noncollinear antiferromagnet

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

ordered ≤ 3.5 K (−270 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c 2/m BNS 12.63
Parent space group	P 3 m 1 No. 164
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 1/2 1/2] 1k
Cell	a 6.8222 · b 13.6444 · c 18.282 Å · α 90° · β 90° · γ 120°
Transition	3.5 K (−270 °C)
Measured at	1.6 K
Magnetic ions	Fe
Largest moment component	2.71 μ_B
Method	high resolution NPD and Mossbauer spectroscopy

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 2/m →

Atom sites · 13 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	0
Fe2_1	Fe	0.5	0	0.25
Fe2_2	Fe	0	0.25	0.25	0.44	2.71	0	2.519
Sn1	Sn	0	0	0.25
Sn2_1	Sn	0.1652	0.4174	0.4196
Sn2_2	Sn	0.1652	0.1652	0.4196
Si1	Si	0.3333	0.3333	0.1176
O1	O	0.3333	0.3333	0.2077
O2	O	0.3333	0.3333	0.4365
O3_1	O	0.1533	0.4234	0.3075
O3_2	O	0.1533	0.1533	0.3075
O4_1	O	0.4636	0.2682	0.0912
O4_2	O	0.4636	0.4636	0.0912

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

C.D. Ling et al. Physical Review B (2017) · doi:10.1103/PhysRevB.96.180410

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.197_Fe4Si2Sn7O16.mcif from MAGNDATA · entry page

sha256 of this copy: da58dde7bf2148389dce72eaac455838f97d79c0d606865255e1ae07d03cc0a5
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.197_Fe4Si2Sn7O16.mcif.