Research/Sitter/MAGNDATA / 0.934_Sr2NiTeO6.mcif

Sr₂Ni₁Te₁O₆

MAGNDATA entry 0.934 · 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 ≤ 35 K (−238 °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 5.6046 · b 5.5649 · c 7.8707 Å · α 90° · β 89.958° · γ 90°
Transition	35 K (−238 °C)
Measured at	4 K
Magnetic ions	Ni
Largest moment component	1.34 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	0.4959	0.25
O1	O	0.2282	0.256	0.9751
O2	O	0.5499	0.5	0.7421
O3	O	0.744	0.2282	0.0249
Ni1	Ni	0	0	0.5	1.18	0	1.34	1.7861
Te1	Te	0	0	0

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

B. Orayech et al. Dalton Trans. (2016) · doi:10.1039/c6dt02473d

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.934_Sr2NiTeO6.mcif from MAGNDATA · entry page

sha256 of this copy: 215048255fa1d2093471058c81a1c29b504c009388c79e11f27354338781d0b2
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.934_Sr2NiTeO6.mcif.

Sr2Ni1Te1O6

Symmetry

Source

Original file

Sr₂Ni₁Te₁O₆