Research/Sitter/MAGNDATA / 0.956_Fe2.71GeTe2.mcif

“Fe_2.71

MAGNDATA entry 0.956 · source

s-wave ferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

Spin group ¹6/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 140 K (−133 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 6₃/m m′ c′ BNS 194.270
Point group	6/mm′m′
Parent space group	P 6₃/m m c No. 194
Spins	collinear · net moment 8.4 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 3.93628 · b 3.93628 · c 16.3535 Å · α 90° · β 90° · γ 120°
Transition	140 K (−133 °C)
Measured at	60 K
Magnetic ions	Fe
Largest moment component	1.4 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 6₃/m m′ c′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	0.1721	0	0	1.4	1.4
Fe2	Fe	0.3333	0.6667	0.25	0	0	1.4	1.4
Ge1	Ge	0.3333	0.6667	0.75
Te1	Te	0.3333	0.6667	0.09

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. F. May et al. PHYSICAL REVIEW B (2016) · doi:10.1103/PhysRevB.93.014411

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.956_Fe2.71GeTe2.mcif from MAGNDATA · entry page

sha256 of this copy: 96bd97913876bd5607bb3b27078d5abb0cabc5214fa1950351c1872d23d91d16
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.956_Fe2.71GeTe2.mcif.

“Fe2.71

Symmetry

Source

Original file

“Fe_2.71