Research/Sitter/MAGNDATA / 1.79_Li2CoSiO4.mcif

Li₂CoSiO₄

MAGNDATA entry 1.79 · 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 ≤ 14 K (−259 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_a c BNS 9.41
Point group	m1′
Parent space group	P n a 2₁ No. 33
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1/2 1/2] 1k
Cell	a 10.685 · b 12.506 · c 9.858 Å · α 90° · β 90° · γ 90°
Transition	14 K (−259 °C)
Measured at	3 K
Magnetic ions	Co
Largest moment component	2.92 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_a c →

Atom sites · 16 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1_1	Co	0.1648	0.2465	0.3728	−2.92	0	0	2.92
Co1_2	Co	0.8352	0.7535	0.6228	−2.92	0	0	2.92
Si1_1	Si	0.4136	0.1246	0.3695
Si1_2	Si	0.5864	0.8754	0.6194
Li1_1	Li	0.1602	0.4953	0.3552
Li1_2	Li	0.8398	0.5047	0.6051
Li2_1	Li	0.4244	0.3697	0.3724
Li2_2	Li	0.5756	0.6303	0.6223
O1_1	O	0.4105	0.1245	0.2052
O1_2	O	0.5895	0.8756	0.4552
O2_1	O	0.5578	0.1267	0.4238
O2_2	O	0.4422	0.8733	0.6737
O3_1	O	0.341	0.0155	0.4239
O3_2	O	0.659	0.9846	0.674
O4_1	O	0.342	0.2322	0.4259
O4_2	O	0.658	0.7678	0.676

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

M. Avdeev et al. J. Solid State Chem. (2014) · doi:10.1016/j.jssc.2014.04.028

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.79_Li2CoSiO4.mcif from MAGNDATA · entry page

sha256 of this copy: 5c4c245211c8b66d108deff71db6f496ecde115ca43f0314feb040d0678a27cf
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.79_Li2CoSiO4.mcif.