Research/Sitter/MAGNDATA / 1.98_DyFe4Ge2.mcif

DyFe₄Ge₂

MAGNDATA entry 1.98 · source

p-wave magnet

Coplanar spins, no net moment, and a translation that reverses every spin: spin splitting that is odd in momentum (p-wave).

ordered ≤ 55 K (−218 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_c c c 2 BNS 27.82
Point group	mm21′
Parent space group	P 4₂/m n m No. 136
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/4 1/4 0] 1k
Cell	a 10.3222 · b 20.6444 · c 3.8609 Å · α 90° · β 90° · γ 90°
Transition	55 K (−218 °C)
Measured at	46 K
Magnetic ions	Dy, Fe
Largest moment component	4.8 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_c c c 2 →

Atom sites · 18 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Dy1_1	Dy	0	0	0.5	0	4.8	0	4.8
Dy1_2	Dy	0	0.25	0	0	−4.8	0	4.8
Dy1_3	Dy	0.5	0.25	0.5	0	−4.8	0	4.8
Dy1_4	Dy	0.5	0.5	0	0	−4.8	0	4.8
Fe1_1	Fe	0.8669	0.111	0	1.3	−0.5	0	1.3928
Fe1_2	Fe	0.1331	0.889	0	0.3	−1.3	0	1.3342
Fe1_3	Fe	0.7789	0.183	0.5	1.3	−0.5	0	1.3928
Fe1_4	Fe	0.2211	0.317	0.5	−0.3	1.3	0	1.3342
Fe1_5	Fe	0.3669	0.361	0	−1.3	0.5	0	1.3928
Fe1_6	Fe	0.6331	0.139	0	0.3	−1.3	0	1.3342
Fe1_7	Fe	0.2789	0.433	0.5	−1.3	0.5	0	1.3928
Fe1_8	Fe	0.7211	0.5671	0.5	−0.3	1.3	0	1.3342
Ge1_1	Ge	0.2157	0	0
Ge1_2	Ge	0	0.3585	0.5
Ge1_3	Ge	0	0.1414	0.5
Ge1_4	Ge	0.7157	0.25	0
Ge1_5	Ge	0.5	0.6086	0.5
Ge1_6	Ge	0.5	0.3915	0.5

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

P. Schobinger-Papamantellos et al. Journal of Magnetism and Magnetic Materials (2006) · doi:10.1016/j.jmmm.2005.05.018

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.98_DyFe4Ge2.mcif from MAGNDATA · entry page

sha256 of this copy: 26e9cee90a870441ff0f8531a9905b7db441b314b170b9421d12c8de86bfc24d
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.98_DyFe4Ge2.mcif.