Research/Sitter/MAGNDATA / 0.671_Sr2TmRuO6.mcif

Sr₂TmRuO₆

MAGNDATA entry 0.671 · 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 ≤ 36 K (−237 °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 5.7553 · b 5.7542 · c 8.1332 Å · α 90° · β 90.16° · γ 90°
Transition	36 K (−237 °C)
Measured at	10 K
Magnetic ions	Ru, Tm
Largest moment component	1.5 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 2₁/c →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0.0019	0.0246	0.2485
Tm1	Tm	0.5	0	0	0	0	1.4	1.4
Ru1	Ru	0	0.5	0	0	0	−1.5	1.5
O1	O	0.2658	0.2955	0.0326
O2	O	0.2026	0.7696	0.0322
O3	O	0.9366	0.489	0.2383

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

Y. Doi et al. J. Mater. Chem. (2003) · doi:10.1039/b301935g

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.671_Sr2TmRuO6.mcif from MAGNDATA · entry page

sha256 of this copy: c617400e0d189e3c770f8c2daeda132cc1199b2ca5e857b79d678fe2f5507efe
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.671_Sr2TmRuO6.mcif.