Research/Sitter/MAGNDATA / 2.8_SrHo2O4.mcif

SrHo₂O₄

MAGNDATA entry 2.8 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 0.7 K (−272 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁/c′ BNS 14.78
Point group	2/m′
Parent space group	P n a m No. 62
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] · [0 0 1/2] 2k
Cell	a 10.0674 · b 11.9104 · c 6.8174 Å · α 90° · β 90° · γ 90°
Transition	0.66 K (−272 °C)
Magnetic ions	Ho
Largest moment component	7.74 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 · 14 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1_1	Sr	0.7525	0.6498	0.125
Sr1_2	Sr	0.7475	0.1498	0.375
Ho1_1	Ho	0.4233	0.1104	0.125	0	0	6.08	6.08
Ho1_2	Ho	0.0767	0.6104	0.375	0	0	−6.08	6.08
Ho2_1	Ho	0.4221	0.6126	0.125	0	−7.74	0.13	7.7411
Ho2_2	Ho	0.0779	0.1126	0.375	0	7.74	−0.13	7.7411
O1_1	O	0.2118	0.1755	0.125
O1_2	O	0.2882	0.6755	0.375
O2_1	O	0.1254	0.481	0.125
O2_2	O	0.3746	0.981	0.375
O3_1	O	0.5142	0.784	0.125
O3_2	O	0.9858	0.284	0.375
O4_1	O	0.4254	0.4223	0.125
O4_2	O	0.0746	0.9223	0.375

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

A. Fennell et al. PHYSICAL REVIEW B (2014) · doi:10.1103/PhysRevB.89.224511

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.8_SrHo2O4.mcif from MAGNDATA · entry page

sha256 of this copy: 2eac3972fc294320b1f1762a3555f526492f3ae3fdaf99edee338068a66ae079
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.8_SrHo2O4.mcif.