Research/Sitter/MAGNDATA / 0.886_SnCo2O4.mcif

Sn₁Co₂O₄

MAGNDATA entry 0.886 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹m¹3̄¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 41 K (−232 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I 4₁/a m′ d′ BNS 141.557
Point group	4/mm′m′
Parent space group	F d 3 m No. 227
Spins	collinear · net moment 24.8 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.644 · b 8.644 · c 8.644 Å · α 90° · β 90° · γ 90°
Transition	41 K (−232 °C)
Measured at	1.6 K
Magnetic ions	Co
Largest moment component	2.57 μ_B
Method	NPD and NSD

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 I 4₁/a m′ d′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0	0	2.57	0	0	2.57
Sn1	Sn	0	0	0
Co2	Co	0.375	0.375	0.375	−2.04	0	0	2.04
O1	O	0.246	0.246	0.246

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

S. Thota et al. PHYSICAL REVIEW B (2017) · doi:10.1103/PhysRevB.96.144104

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.886_SnCo2O4.mcif from MAGNDATA · entry page

sha256 of this copy: 184a24661275d11139e818e2b14bf1d861073d73fb51c0ab83409bc947069f02
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.886_SnCo2O4.mcif.

Sn1Co2O4

Symmetry

Source

Original file

Sn₁Co₂O₄