Research/Sitter/MAGNDATA / 0.936_Sr2MnTeO6.mcif

Sr₂Mn₁Te₁O₆

MAGNDATA entry 0.936 · 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 ≤ 20 K (−253 °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 5.6897 · b 5.6719 · c 8.0177 Å · α 90° · β 90.087° · γ 90°
Transition	20 K (−253 °C)
Measured at	4 K
Magnetic ions	Mn
Largest moment component	4.55 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	0.5035	0.021	0.2492
O1	O	0.9422	0.0086	0.7348
O2	O	0.2938	0.2344	0.9701
O3	O	0.262	0.2096	0.5296
Mn1	Mn	0	0	0	4.55	0	0	4.55
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. Eur. J. Inorg. Chem. (2006) · doi:10.1002/ejic.200500880

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.936_Sr2MnTeO6.mcif from MAGNDATA · entry page

sha256 of this copy: 66a4aad73b21978b073a8602702d0f5e9fd9a3243e4396e8eb01f159d5cf2c88
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.936_Sr2MnTeO6.mcif.

Sr2Mn1Te1O6

Symmetry

Source

Original file

Sr₂Mn₁Te₁O₆