Research/Sitter/MAGNDATA / 0.811_Fe2WO6.mcif

Fe₂WO₆

MAGNDATA entry 0.811 · source

d-wave 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. d-wave: the splitting changes sign twice around the Fermi surface (2 nodal planes).

Spin group ²m¹m²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 240 K (−33 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P b c′ n′ BNS 60.423
Point group	m′m′m
Parent space group	P b c n No. 60
Spins	collinear · 2 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.576 · b 16.766 · c 4.967 Å · α 90° · β 90° · γ 90°
Transition	240 K (−33 °C)
Magnetic ions	Fe
Largest moment component	2.55 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 b c′ n′ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0.0564	0.25	0	0	2.55	2.55
Fe2	Fe	0	0.7242	0.25	0	0	2.15	2.15
W1	W	0	0.3872	0.25
O1	O	0.24	0.0409	0.5958
O2	O	0.2734	0.1271	0.0692
O3	O	0.276	0.2035	0.5817

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

H. Pinto et al. Acta Cryst. A” (1977) · doi:10.1107/s0567739477001648

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.811_Fe2WO6.mcif from MAGNDATA · entry page

sha256 of this copy: e2363259318b8237a62d4e367b8be42250c49b1f8b8c2902e2bfe711b2af2dbd
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.811_Fe2WO6.mcif.