Research/Sitter/MAGNDATA / 1.434_Fe1.05Te.mcif

Fe_1.05Te

MAGNDATA entry 1.434 · 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 ≤ 50 K (−223 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a 2₁/m BNS 11.55
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 7.6624 · b 3.783 · c 12.5286 Å · α 90° · β 89.17° · γ 90°
Transition	50 K (−223 °C)
Measured at	2 K
Magnetic ions	Fe
Largest moment component	2.54 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_a 2₁/m →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0.3808	0.25	0.0018	0	2.54	0	2.54
Fe2	Fe	0.1145	0.25	0.357
Te1	Te	0.129	0.25	0.14

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

A. Martinelli et al. PHYSICAL REVIEW B (2010) · doi:10.1103/PhysRevB.81.094115

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.434_Fe1.05Te.mcif from MAGNDATA · entry page

sha256 of this copy: d4b88e39f0e458598049b47b53a2c9bb394c502d76925e55c2809961f72979ea
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.434_Fe1.05Te.mcif.