Research/Sitter/MAGNDATA / 0.932_Er2PtGe6.mcif

Er₂Pt₁Ge₆

MAGNDATA entry 0.932 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 4.9 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C m c′ a BNS 64.472
Point group	m′mm
Parent space group	C m c e No. 64
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.0925 · b 8.0193 · c 21.6146 Å · α 90° · β 90° · γ 90°
Transition	4.9 K (−268 °C)
Measured at	1.9 K
Magnetic ions	Er
Largest moment component	7.58 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 C m c′ a →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0.253	0.3678	0.0817	7.58	0	0	7.58
Pt1	Pt	0	0.1292	0.1401
Ge1	Ge	0.2595	0.1271	0.1941
Ge2	Ge	0	0.0946	0.4665
Ge3	Ge	0	0.1205	0.0355
Ge4	Ge	0	0.3624	0.312
Ge5	Ge	0	0.4135	0.1947

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

B. Penc et al. Journal of Magnetism and Magnetic Materials (2020) · doi:10.1016/j.jmmm.2020.167152

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.932_Er2PtGe6.mcif from MAGNDATA · entry page

sha256 of this copy: b282857abad4d496c9704a638295be86bd7314265431ecfe864f89c8c6ac75d8
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.932_Er2PtGe6.mcif.

Er2Pt1Ge6

Symmetry

Source

Original file

Er₂Pt₁Ge₆