Research/Sitter/MAGNDATA / 0.218_Co2SiO4.mcif

Co₂SiO₄

MAGNDATA entry 0.218 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 49.5 K (−224 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P n m a BNS 62.441
Parent space group	P n m a No. 62
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 10.2864 · b 5.9872 · c 4.7785 Å · α 90° · β 90° · γ 90°
Transition	49.5 K (−224 °C)
Measured at	2 K
Magnetic ions	Co
Largest moment component	3.74 μ_B
Method	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 P n m a →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0	0	0.94	3.74	0.47	3.8849
Co2	Co	0.276	0.25	0.9911	0	3.64	0	3.64
Si1	Si	0.0948	0.25	0.4284
O1	O	0.0918	0.25	0.7673
O2	O	0.4485	0.25	0.216
O3	O	0.1644	0.0331	0.2813

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

W. Lottermoser et al. Phys. Stat. Sol. (1988) · doi:10.1002/pssa.2211090226

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.218_Co2SiO4.mcif from MAGNDATA · entry page

sha256 of this copy: cc477de7004c922252d5ca98cf80dd75fb55d0b974dc59d4242e64293120ada0
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.218_Co2SiO4.mcif.