Research/Sitter/MAGNDATA / 1.771_Na2Co2TeO6.mcif

Na₂Co₂TeO₆

MAGNDATA entry 1.771 · 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 ¹1̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 11 K (−262 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_S 1 BNS 2.7
Point group	11′
Parent space group	C 2/m No. 12
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 10.6563 · b 18.3877 · c 5.7698 Å · α 90° · β 108.95° · γ 90°
Transition	11 K (−262 °C)
Measured at	1.6 K
Magnetic ions	Co
Largest moment component	1.5 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 P_S 1 →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0.3375	0	0.48	1.5	1.18	1.8721
Te1	Te	0	0	0
Na1	Na	0	0.25	0.5
Na2	Na	0	0.4133	0.5
O1_1	O	0.1394	0.1728	0.8023
O1_2	O	0.8606	0.1728	0.1977
O2	O	0.3809	0	0.1928

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

E. Dufault et al. Phys. Rev. B (2023) · doi:10.1103/PhysRevB.108.064405

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.771_Na2Co2TeO6.mcif from MAGNDATA · entry page

sha256 of this copy: 1878d68d74868d9c3f33cfe0aabb027d613cd5670c13b4f4805cbceab1ce9a22
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.771_Na2Co2TeO6.mcif.