Research/Sitter/MAGNDATA / 2.80_ErFe6Ge6.mcif

ErFe₆Ge₆

MAGNDATA entry 2.80 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

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

ordered ≤ 3 K (−270 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P m′ m′ n BNS 59.409
Point group	m′m′m
Parent space group	I m m m No. 71
Spins	collinear · net moment 90 μ_B per cell
Propagation	[1 1 1] · [0 0 0] 1k
Cell	a 8.0991 · b 26.5293 · c 5.10721 Å · α 90° · β 90° · γ 90°
Transition	3 K (−270 °C)
Magnetic ions	Er, Fe
Largest moment component	7.5 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 m′ m′ n →

Atom sites · 26 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0	0	0	7.5	0	0	7.5
Er2	Er	0.5	0.6677	0	7.5	0	0	7.5
Er3	Er	0.5	0	0	7.5	0	0	7.5
Er4	Er	0	0.6677	0	7.5	0	0	7.5
Ge1_1	Ge	0.3592	0	0
Ge1_2	Ge	0.6408	0	0
Ge2_1	Ge	0.8592	0.6677	0
Ge2_2	Ge	0.1408	0.6677	0
Ge3_1	Ge	0.815	0	0
Ge3_2	Ge	0.185	0	0
Ge4_1	Ge	0.315	0.6677	0
Ge4_2	Ge	0.685	0.6677	0
Ge5	Ge	0.5	0.557	0
Ge6	Ge	0	0.557	0
Ge7	Ge	0	0.114	0
Ge8	Ge	0.5	0.114	0
Ge9	Ge	0	0.228	0
Ge10	Ge	0.5	0.228	0
Fe1_1	Fe	0.7443	0	0.5	−2	0	0	2
Fe1_2	Fe	0.2557	0	0.5	2	0	0	2
Fe2_1	Fe	0.25	0.75	0.75	2	0	0	2
Fe2_2	Fe	0.75	0.75	0.75	−2	0	0	2
Fe3_1	Fe	0.7557	0.832	0	−2	0	0	2
Fe3_2	Fe	0.2443	0.832	0	2	0	0	2
Fe4_1	Fe	0.2557	0.083	0.251	2	0	0	2
Fe4_2	Fe	0.7557	0.583	0.751	−2	0	0	2

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

O. Oleksyn et al. Journal of Alloys and Compounds (1997) · doi:10.1016/S0925-8388(96)03125-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.80_ErFe6Ge6.mcif from MAGNDATA · entry page

sha256 of this copy: 3c5f8cfaf68a8acc791dceb4dfb93ea358359d2cf3589b86d9ae66d959659bde
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.80_ErFe6Ge6.mcif.