Research/Sitter/MAGNDATA / 0.384_LiCoPO4.mcif

LiCoPO₄

MAGNDATA entry 0.384 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 22 K (−251 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁′/c BNS 14.77
Parent space group	P n m a No. 62
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 10.2001 · b 5.9199 · c 4.6899 Å · α 90° · β 90° · γ 90°
Transition	22 K (−251 °C)
Measured at	10 K
Magnetic ions	Co
Largest moment component	4.19 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 2₁′/c →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Li1_1	Li	0	0	0
Li1_2	Li	0.5	0	0.5
P1	P	0.0945	0.25	0.4184
Co1	Co	0.2786	0.25	0.9793	0	4.19	−0.34	4.2038
O1	O	0.0977	0.25	0.741
O2	O	0.455	0.25	0.2043
O3_1	O	0.1663	0.0446	0.282
O3_2	O	0.3337	0.9554	0.782

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

D. Vaknin et al. PHYSICAL REVIEW B (2002) · doi:10.1103/PhysRevB.65.224414

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.384_LiCoPO4.mcif from MAGNDATA · entry page

sha256 of this copy: 74f9afc6a82a5bb701124c05e73568852599ffe237531d09d4691c82fd62054a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.384_LiCoPO4.mcif.