Research/Sitter/MAGNDATA / 0.794_Sr2HoRuO6.mcif

Sr₂HoRuO₆

MAGNDATA entry 0.794 · 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 ≤ 34 K (−239 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 2₁/c BNS 14.75
Point group	2/m
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 5.7573 · b 5.7764 · c 8.142 Å · α 90° · β 90.36° · γ 90°
Transition	34 K (−239 °C)
Measured at	2 K
Magnetic ions	Ho, Ru
Largest moment component	7.87 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	0.0075	0.0306	0.7552
Ho1	Ho	0.5	0	0.5	0.97	0	−7.87	7.9356
Ru1	Ru	0.5	0	0	0.22	0	−1.79	1.8048
O1	O	0.3015	0.2776	0.9605
O2	O	0.2667	0.2935	0.5403
O3	O	0.9329	0.4809	0.7304

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

N. G. Parkinson et al. J. Phys.: Condens. Matter (2004) · doi:10.1088/0953-8984/16/43/005

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.794_Sr2HoRuO6.mcif from MAGNDATA · entry page

sha256 of this copy: f33fce05dcdc7f33c5876f7250bb817616a2af607f9951e37c5602233c5c01ea
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.794_Sr2HoRuO6.mcif.