Research/Sitter/MAGNDATA / 0.937_Sr2CoTeO6.mcif

Sr₂Co₁Te₁O₆

MAGNDATA entry 0.937 · source

altermagnet

No net magnetisation, yet the electron bands are spin-split: the up and down spin sublattices are related only by a rotation or mirror, never by a shift or inversion.

Spin group ²2/²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 18 K (−255 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 2₁/c BNS 14.75
Point group	2/m
Parent space group	P 2₁/n No. 14
Spins	collinear · 1 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.6319 · b 5.5976 · c 7.9197 Å · α 90° · β 90.055° · γ 90°
Transition	18 K (−255 °C)
Measured at	4 K
Magnetic ions	Co
Largest moment component	1.91 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 2₁/c →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0.5016	0.0135	0.2505
O1	O	0.9477	0.0051	0.7381
O2	O	0.2839	0.2377	0.972
O3	O	0.7582	0.2805	0.0259
Co1	Co	0	0	0	1.18	0	1.91	2.2441
Te1	Te	0	0	0.5

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

L. Ortega-San Martin et al. J. Mater. Chem. (2005) · doi:10.1039/B413341B

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.937_Sr2CoTeO6.mcif from MAGNDATA · entry page

sha256 of this copy: ef05c2cbae74b1c06fcd471dacc54e6cdcde83eb232b1a357a6f2c244020a1f6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.937_Sr2CoTeO6.mcif.

Sr2Co1Te1O6

Symmetry

Source

Original file

Sr₂Co₁Te₁O₆