Research/Sitter/MAGNDATA / 0.420_Sr2LuRuO6.mcif

Sr₂LuRuO₆

MAGNDATA entry 0.420 · source

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.

Spin group ²2/²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 30 K (−243 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁/c BNS 14.75
Parent space group	P 2₁/n No. 14
Spins	collinear · 1 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.713 · b 5.718 · c 8.0762 Å · α 90° · β 90.19° · γ 90°
Transition	30 K (−243 °C)
Measured at	4.2 K
Magnetic ions	Ru
Largest moment component	3.9 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 2₁/c →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0.0056	0.0254	0.2472
Lu1	Lu	0.5	0	0
Ru1	Ru	0.5	0	0.5	3.9	0	0	3.9
O1	O	0.266	0.2945	0.0342
O2	O	0.2107	0.7717	0.0358
O3	O	0.9394	0.4885	0.2371

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. Battle et al. JOURNAL OF SOLID STATE CHEMISTRY (1989) · doi:10.1016/0022-4596(89)90133-3

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.420_Sr2LuRuO6.mcif from MAGNDATA · entry page

sha256 of this copy: 8dc763912b0b1e9d70fe9b892aad9d6657ac441ea451b9757b4abda41a7bd5be
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.420_Sr2LuRuO6.mcif.