Research/Sitter/MAGNDATA / 2.85_Ho2BaCuO5.mcif

Ho₂Ba₁Cu₁O₆

MAGNDATA entry 2.85 · 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 ≤ 8 K (−265 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 2₁′/c BNS 14.77
Point group	2′/m
Parent space group	P n m a No. 62
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 1/2 0] · [0 0 0] 2k
Cell	a 12.1776 · b 11.3235 · c 7.1228 Å · α 90° · β 90° · γ 90°
Transition	8 K (−265 °C)
Measured at	2.3 K
Magnetic ions	Cu, Ho
Largest moment component	8.46 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 · 18 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1_1	Ho	0.2868	0.125	0.1164	7.17	0	0.82	7.2167
Ho1_2	Ho	0.2868	0.625	0.1164	−2.59	0	2.86	3.8585
Ho2_1	Ho	0.0745	0.125	0.3957	1.05	0	−8.46	8.5249
Ho2_2	Ho	0.0745	0.625	0.3957	1.17	0	−8.32	8.4019
Cu1_1	Cu	0.6581	0.125	0.7077	−0.77	0	0.65	1.0077
Cu1_2	Cu	0.6581	0.625	0.7077	0.69	0	0.17	0.7106
Ba1_1	Ba	0.903	0.125	0.932
Ba1_2	Ba	0.903	0.625	0.932
O1_1	O	0.435	0.9991	0.1646
O1_2	O	0.435	0.4991	0.1646
O1_3	O	0.935	0.2509	0.3354
O1_4	O	0.935	0.7509	0.3354
O2_1	O	0.2275	0.7534	0.351
O2_2	O	0.2275	0.2534	0.351
O2_3	O	0.7275	0.4966	0.149
O2_4	O	0.7275	0.9966	0.149
O3_1	O	0.102	0.125	0.085
O3_2	O	0.102	0.625	0.085

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. Yanda et al. PHYSICAL REVIEW B (2021) · doi:10.1103/PhysRevB.104.144401

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.85_Ho2BaCuO5.mcif from MAGNDATA · entry page

sha256 of this copy: 0bdaaa3d2d27cf4f1ce08e1af10088b49c49099af7a7e088235b44b19352ef0b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.85_Ho2BaCuO5.mcif.

Ho2Ba1Cu1O6

Symmetry

Source

Original file

Ho₂Ba₁Cu₁O₆