Research/Sitter/MAGNDATA / 1.436_Fe1.125Te.mcif

Fe_1.125Te

MAGNDATA entry 1.436 · 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 ≤ 63 K (−210 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_S 1 BNS 2.7
Parent space group	P 4/n m m No. 129
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 7.686 · b 3.791 · c 12.528 Å · α 90° · β 89.254° · γ 90°
Transition	63 K (−210 °C)
Measured at	4.2 K
Magnetic ions	Fe
Largest moment component	1.48 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 · 3 sites · CSV

site	element	x	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	−0.49	1.48	1.36	2.0646
Fe2	Fe	0.25	0.2805
Te1	Te	0.25	0.1365

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

D. Fruchart et al. Mat. Res. Bull. (1975) · doi:10.1016/0025-5408(75)90151-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.436_Fe1.125Te.mcif from MAGNDATA · entry page

sha256 of this copy: 434693b88234ccd5ed3d1d00fdaec3c5d47a3dde7771708c61e362a7e2e5ed9e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.436_Fe1.125Te.mcif.