Research/Sitter/MAGNDATA / 1.168_Sr2CuTeO6.mcif

Sr₂CuTeO₆

MAGNDATA entry 1.168 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 29 K (−244 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_c 2/c BNS 15.90
Point group	2/m1′
Parent space group	I 4/m No. 87
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 10.8368 · b 10.8368 · c 8.4521 Å · α 90° · β 90° · γ 90°
Transition	29 K (−244 °C)
Measured at	1.5 K
Magnetic ions	Cu
Largest moment component	0.69 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 C_c 2/c →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0	0.25	0.25
Cu1	Cu	0	0	0	−0.69	0	0	0.69
Te1	Te	0	0	0.5
O1_1	O	0.1513	0.1037	0
O1_2	O	0.8963	0.1513	0
O2	O	0	0	0.275

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

T. Koga et al. PHYSICAL REVIEW B (2016) · doi:10.1103/PhysRevB.93.054426

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.168_Sr2CuTeO6.mcif from MAGNDATA · entry page

sha256 of this copy: 19184e660b94a8c2cc39bc9fbfed1877569f06f5a2e9cadd52f696b89aa7ba77
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.168_Sr2CuTeO6.mcif.